There are many drivers that have been setting the generic driver
model level shutdown callback, and pci thus must not override it.
Without this patch we can have really bad data loss on various
raid controllers.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
__cfq_get_queue(). __cfq_get_queue() finds an existing queue (struct
cfq_queue) of the current process for the device and returns it. If it's not
found, __cfq_get_queue() creates and returns a new one if __cfq_get_queue() is
called with __GFP_WAIT flag, or __cfq_get_queue() returns NULL (this means that
get_request() fails) if no __GFP_WAIT flag.
On the other hand, in __make_request(), get_request() is called without
__GFP_WAIT flag at the first time. Thus, the get_request() fails when there is
no existing queue, typically when it's called for the first I/O request of the
process to the device.
Though it will be followed by get_request_wait() for general case,
__make_request() will just end the I/O with an error (EWOULDBLOCK) when the
request was for read-ahead.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Patch from Nicolas Pitre
Without this some devices fail to work again after a suspend event.
Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Catalin Marinas
The initial IB2 addresses did not depend on the IB2 base. This
patch defines them as (VERSATILE_IB2_BASE + offset).
Signed-off-by: Catalin Marinas
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Catalin Marinas
The GPIO base for Integrator/CP is different from the
Integrator/AP. This patch sets the correct value for
INTEGRATOR_GPIO_BASE.
Signed-off-by: Catalin Marinas
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Catalin Marinas
The current red and blue colours on the Versatile CLCD are
reversed when the 5:6:5 mode is used. The patch sets the proper
bit in the SYS_CLCD register value.
Signed-off-by: Catalin Marinas
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
It looks like logic for enabling hardware tapping in ALPS driver was
inverted and we enable it only if it was already enabled by BIOS or
firmware.
I have a confirmation from one user that the patch below fixes the problem
for him and it might be beneficial if we could get it into 2.6.12.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The ELF core dump code has one use of off_t when writing out segments.
Some of the segments may be passed the 2GB limit of an off_t, even on a
32-bit system, so it's important to use loff_t instead. This fixes a
corrupted core dump in the bigcore test in GDB's testsuite.
Signed-off-by: Daniel Jacobowitz <dan@codesourcery.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixed a problem that showed up in the Fedora development tree a few
weeks before the Fedora Core 4 release, initially as slab corruption, later
as hard crashes on boot up, when slab debugging was disabled for the
release. More details on the history at
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=158424
The problem is caused by sbp2's use of scsi_host->hostdata[0] to hold a
scsi_id, without explicitly requesting space for it. Since hostdata is
declared as a zero-sized array, we don't get any such space by default, so
it must be explicitly requested. The patch below implements just that.
Signed-off-by: Alexandre Oliva <aoliva@redhat.com>
Cc: Jody McIntyre <scjody@modernduck.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
__elv_add_request(). rq.count[READ] + rq.count[WRITE] can increase
more than one if another thread has allocated a request after the
current request is allocated or in_flight could have changed resulting
in larger-than-one change of nrq, thus breaking the threshold
mechanism.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Tejun Heo <htejun@gmail.com>
This fixes various crashes on 64-bit when using this module.
Based upon a patch by Juergen Kreileder <jk@blackdown.de>.
Signed-off-by: David S. Miller <davem@davemloft.net>
ACKed-by: Patrick McHardy <kaber@trash.net>
enable cpusets
enable new lpfc and jsm drivers
enable new dm-multipath
leave new agp disabled
disable rivafb, it does not handle the cards in G5 models (FX5200 as example)
the new nvidiafb doesnt work on bigendian, yet
Signed-off-by: Olaf Hering <olh@suse.de>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Here is a patch to update the example configs in arch/ppc64/configs.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Without this patch, some usb kobjects, which are parents to the usx2y's
kobjects can be freed before the usx2y's. This led to an oops in
get_kobj_path_length() and a dead keyboard, when the usx2y's kobjects
were freed. The patch ensures the correct sequence. Tested ok on
kernel 2.6.12-rc2.
Present in ALSA cvs
Signed-off-by: Karsten Wiese <annabellesgarden@yahoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Without this patch, some usb kobjects, which are parents to the usx2y's
kobjects can be freed before the usx2y's. This led to an oops in
get_kobj_path_length() and a dead keyboard, when the usx2y's kobjects
were freed. The patch ensures the correct sequence. Tested ok on
kernel 2.6.12-rc2.
Present in ALSA cvs
Signed-off-by: Karsten Wiese <annabellesgarden@yahoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch causes the ignore_normal_resume flag to be set slightly earlier,
before there is a chance that the apm driver will receive the normal resume
event from the BIOS. (Addresses Debian bug #310865)
Signed-off-by: Thomas Hood <jdthood@yahoo.co.uk>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On one path, cond_resched_lock() fails to return true if it dropped the lock.
We think this might be causing the crashes in JBD's log_do_checkpoint().
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On 64-bit machines, PCI_BASE_ADDRESS_MEM_MASK and other mask constants
passed to pci_size() are 64-bit (for example ~0x0fUL). However, pci_size
does comparisons between the u32 arguments and the mask, which will fail
even though any result from pci_size is still just 32-bit.
Changing the mask argument to u32 seems the obvious thing to do, since all
arithmetic in the function is 32-bit and having a larger mask makes no
sense.
This triggered on a PPC64 system here where an adapter (VGA, as it
happened) had a memory region base of 0xfe000000 and a sz of the same,
matching the if (max == maxbase ...) test at the bottom of pci_size but
failing the mask comparison. Quite a corner case which I guess explains
why we haven't seen it until now.
Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch merges a lot of duplicated code in the slip and slirp drivers,
abstracts out the slip protocol, and makes the slip driver work in 2.6.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Convert the boot-time host ptrace testing from clone to fork. They were
essentially doing fork anyway. This cleans up the code a bit, and makes
valgrind a bit happier about grinding it.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix a build failure when CONFIG_MODE_SKAS is disabled and make a Makefile
comment fit in 80 columns.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This adds a clause that notes explicitly that the person doing the
sign-off knows that the project (and his sign-off) is public and will
possibly get archived and re-distributed.
This patch alows you to change the source address of icmp error
messages. It applies cleanly to 2.6.11.11 and retains the default
behaviour.
In the old (default) behaviour icmp error messages are sent with the ip
of the exiting interface.
The new behaviour (when the sysctl variable is toggled on), it will send
the message with the ip of the interface that received the packet that
caused the icmp error. This is the behaviour network administrators will
expect from a router. It makes debugging complicated network layouts
much easier. Also, all 'vendor routers' I know of have the later
behaviour.
Signed-off-by: David S. Miller <davem@davemloft.net>
Userland layer-2 tunneling devices allocated through the TUNTAP driver
(drivers/net/tun.c) have a type of ARPHRD_NONE, and have no link-layer
address. The kernel complains at regular interval when IPv6 Privacy
extension are enabled because it can't find an hardware address :
Dec 29 11:02:04 auguste kernel: __ipv6_regen_rndid(idev=cb3e0c00):
cannot get EUI64 identifier; use random bytes.
IPv6 Privacy extensions should probably be disabled on that sort of
device. They won't work anyway. If userland wants a more usual
Ethernet-ish interface with usual IPv6 autoconfiguration, it will use a
TAP device with an emulated link-layer and a random hardware address
rather than a TUN device.
As far as I could fine, TUN virtual device from TUNTAP is the very only
sort of device using ARPHRD_NONE as kernel device type.
Signed-off-by: Rmi Denis-Courmont <rdenis@simphalempin.com>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We saw following trace several times:
|BUG: using smp_processor_id() in preemptible [00000001] code: httpd/30137
|caller is icmpv6_send+0x23/0x540
| [<c01ad63b>] smp_processor_id+0x9b/0xb8
| [<c02993e7>] icmpv6_send+0x23/0x540
This is because of icmpv6_socket, which is the only one user of
smp_processor_id() in icmpv6_send(), AFAIK.
Since it should be used in non-preemptive context,
let's defer the dereference after disabling preemption
(by icmpv6_xmit_lock()).
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
<linux/if_tr.h> uses __be16, but does not directly include
<asm/byteorder.h>. Add this in, so that dhcp/net-tools token ring code
can compile again.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This fixes a data corruption error for mail delivery applications that
expect to be able to do posix locking and then append writes on NFS.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This makes the EHCI driver spin a bit longer before concluding that the
port reset failed. "Obviously safe."
It allows some devices to enumerate that previously didn't. We've seen
a bunch of these problem reports recently, this will make some go away.
As reported by Michael Zapf <Michael.Zapf@uni-kassel.de>, some EHCI
controllers seem to take forever to finish port resets and produce
"port N reset error -110" type errors. Spinning a bit longer helps.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The pwc chainsaw session left some setups not working. There is a
sanity check on compression buffers that simply isn't right any more as
we never allocate one.
This doesn't address the email and other changes. I'll do those
tomorrow if I get time, but it is the minimal fix for the code and basic
feature set.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The current radeonfb memset's the framebuffer to 0 when loaded. This
removes occasional artifacts but has the nasty side effect that if you
load radeonfb without framebuffer console, you destroy the VGA text
buffer, font, etc... radeon must not touch the framebuffer content when
it doesn't "own" it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
M68k: Mark Sun-3 NCR5380 SCSI broken until NCR5380_abort() and
NCR5380_bus_reset() are replaced with real new-style EH routines (the old EH
SCSI constants were removed in 2.6.12-rc3).
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Now m68k no longer sets HAVE_ARCH_GET_SIGNAL_TO_DELIVER, can it be removed
completely? Or may ARM26 still need it? Note that its usage was removed from
kernel/signal.c about 2 months ago.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from David Brownell
The ARM generic Kconfig filters out IDE options ... except for
an error prone ARMload of special cases.
This adds one general case to the systems that will offer IDE options:
kernels with PCMCIA support, which probably want to use IDE to access
CompactFlash cards. This might allow many (most?) of the other cases
to disappear, for systems that only see IDE hardware through CF cards.
Right now this one patch is used to gate access to CF cards, including
MicroDrives, for both omap_cf and at91_cf drivers.
Signed-off-by: David Brownell
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This removes a bogus hack from the radeon IRQ handler.
There is a better fix from myself and benh in DRM CVS but I'll wait
until 2.6.13-rc so it gets more testing.
Signed-off-by: Dave Airlie <airlied@linux.ie>
Despite all the care lately in making the powermac sleep/wakeup as
robust as possible, there is still a nasty related to the use of cpufreq
on PMU based machines. Unfortunately, it affects paulus old powerbook
so I have to fix it :)
We didn't manage to understand what is precisely going on, it leads to
memory corruption and might have to do with RAM not beeing properly
refreshed when a cpufreq transition is done right before the sleep.
The best workaround (and less intrusive at this point) we could come up
with is included in this patch. We basically do _not_ force a switch to
high speed on suspend anymore (that is what is causing the problem) on
those machines. We still force a speed switch on wakeup (since we don't
know what speed we are coming back from sleep at, and that seems to work
fine).
Since, during this short interval, the actual CPU speed might be
incorrect, we also hack around by multiplying loops_per_jiffy by 2 (max
speed factor on those machines) during early wakeup stage to make sure
udelay's during that time aren't too short.
For after 2.6.12, we'll change udelay implementation to use the CPU
timebase (which is always constant) instead like we do on ppc64 and thus
get rid of all those problems.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
My patch from a few weeks back (now in mainline), called "Cleanup skbs to
prevent unregister_netdevice() hanging", can cause our TX timeout code to
fire on machines with lots of VLANs (because it takes > 2 seconds between
when we stop the queues and when we're finished stopping the connections).
When that happens the TX timeout code freaks out and does a WARN_ON()
because as far as it's concerned there shouldn't be a TX timeout happening,
which is fair enough.
I have a "proper" fix for this, which is to a) do refcounting on
connections and b) implement a proper ack timer so we don't keep unacked
skbs lying around for ever. But for 2.6.12 I propose just supressing the
WARN_ON(). Users will still see the "NETDEV WATCHDOG" warning, but that's
not nearly as bad as a WARN_ON() which users interpret as an Oops.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6
transition.
Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage
for unified caches") triggered this bug and 405EP boards don't boot
anymore.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
MSI functionality is broken on the GC_LE x86 chipset that Serverworks
developed and that is being used in various platforms today. Broadcom is
going to push out to the kernel MSI enabled Gigabit drivers (in the very
near future), and we would like to make sure that MSI does not get
enabled on any platforms using the GC_LE chipset (device id 0x17).
Following the AMD 8131 example, I am including a patch to disable MSI
functionality when a GCNB_LE is detected. Please let me know if there
are any issues with this. This is a permanent fix for this chipset, as
the hardware will not be updated.
Signed-off-by: Narendra Sankar <nsankar@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
and add_to_page_cache fails.
Thanks to Shaggy for pointing out the fix.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Shaggy (shaggy@us.ibm.com)
Patch from Vincent Sanders
This fixes the "multiple definitions of cpufreq_get" build faliure on
the hackkit SA1100 platform.
Signed-off-by: Vincent Sanders
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Vincent Sanders
This fixes the "multiple definitions of cpufreq_get" build faliure on
the Badge4 SA1100 platform.
Signed-off-by: Vincent Sanders
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
current->blocked will be set to the value of current->thread_info->flags if the
cmpxchg to update thread_info->flags fails. For performance reasons the store into
current->blocked was placed in the cmpxchg loop. However, the cmpxchg overwrites the
register holding the value to be stored. In the rare case of a retry the value of
thread_info->flags will be written into current->blocked.
The fix is to use another register so that the register containing the current->blocked
value is not overwritten.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch from Dave Neuer
This fixes the "multiple definitions of cpufreq_get" errors on
StrongARM-based iPAQs.
Signed-off-by: Dave Neuer
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
ftdi_sio: Avoid losing bytes at tty-ldisc.
This patch was originally developed by Daniel Smertnig. I
(Ian Abbott) made a few changes. It has been tested by both
Daniel and I, at least for raw, non-canonical receive data
processing.
Here is Daniel's original description of the patch:
===
During a project in which I was using a FTDI 232BM to
transmit data at relative high speeds (625kBit/s), I
noticed a problem where data was lost even if flow
control was enabled: The FTDI-Driver receives 512 Bytes
of data over USB at a time, which consists of 8 64-Byte
packets. Subtracting the 2 bytes of status information
included in each packet this gives 496 "real" data
bytes per read.
This data is passed (indirectly, via the flip buffers)
to the tty line discipline which takes care of
throttling when there the free buffer space reaches
TTY_THRESHOLD_THROTTLE (128). Because the FTDI driver
processes up to 496 bytes at a time, throttling won't
happen in time and the line discipline will discard the
remaining bytes.
To avoid this the patch passes data in 62-byte blocks
to the tty layer and checks the available space in the
ldisc-buffers. If there isn't enough free space,
processing the rest of the data is delayed using a
workqueue.
Note: The original problem should be easily
reproducible with a userspace program which does slow &
small reads.
===
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Daniel Smertnig <daniel.smertnig@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This smoothes two imperfections:
- Increase number of LUNs per device from 4 to 9. The best solution
would be to remove this limit altogether, but that has to wait until
the time when more than 26 hosts are allowed.
- Replace mdelay with msleep in a probing routine.
Signed-off-by: Pete Zaitcev <zaitcev@yahoo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Here's a patch that fixes up the pci_dev refcounting in the CPCI code.
I've done some testing against it and it seems fine here.
Signed-off-by: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Problem:
Incorrect md5sum when using ATAPI PIO mode to verify a distro CD.
Root cause: sg traverse problem.
In __atapi_pio_bytes(), if qc->cursg++ is increased and "goto
next_page" is executed, then sg is not updated to the new qc->cursg
and the old sg is overwritten with the new data.
Changes:
- Replace "goto next_page" with "goto next_sg" to make sg updated.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
This patch fixes some bugs in the ppc64 PER_LINUX32 implementation,
noted by Juergen Kreileder:
* uname(2) doesn't respect PER_LINUX32, it returns 'ppc64' instead of 'ppc'
* Child processes of a PER_LINUX32 process don't inherit PER_LINUX32
Along the way I took the opportunity to move things around so that
sys_ppc32.c only has 32-bit syscall emulation functions and to remove
the obsolete "fakeppc" command line option.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
READA errors failing with EWOULDBLOCK/EAGAIN do not constitute a valid
reason for failing the path; this lead to erratic errors on DM multipath
devices. This error can be safely propagated upwards without failing the
path.
Acked-by: Kevin Corry <kevcorry@us.ibm.com>
Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Lars Marowsky-Bree <lmb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There've been reports of problems with CONFIG_PREEMPT=y and the high
floating point partition. This is caused by the possibility of preemption
and rescheduling on a different processor while saving or restioirng the
high partition.
The only places where the FPU state is touched are in ptrace, in
switch_to(), and where handling a floating-point exception. In switch_to()
preemption is off. So it's only in trap.c and ptrace.c that we need to
prevent preemption.
Here is a patch that adds commentary to make the conditions clear, and adds
appropriate preempt_{en,dis}able() calls to make it so. In trap.c I use
preempt_enable_no_resched(), as we're about to return to user space where
the preemption flag will be checked anyway.
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove spurious MSR_SE reset during kprobe processing.
single_step_exception() already does it for us. Reset it to be safe when
executing the fault_handler.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add stricter checks during kprobe registration. Return correct error value so
insmod doesn't succeed. Also printk reason for registration failure.
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Martin Bligh determined that this patch is causing his test box to not boot.
Revert.
Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
arch/i386/kernel/vsyscall-note.o is not listed as a target so its .cmd file
is neither considered as a target nor is it read on the next build. This
causes vsyscall-note.o to be rebuilt every time that you run make, which
causes vmlinux to be rebuilt every time.
Signed-off-by: Keith Owens <kaos@ocs.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The fact that access_ok() doesn't use some of its arguments trips some
unused variable warnings. This patch silences them permanently.
Signed-off-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6
transition.
Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage
for unified caches") triggered this bug and 405EP boards don't boot
anymore.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This cleans an error path which used to leak file descriptors by returning
without trying to tidy up.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It turns out that we need to check for pending signals when a newly forked
process is run for the first time. With strace -f, strace needs to know about
the forked process before it gets going. If it doesn't, then it ptraces some
bogus values into its registers, and the process segfaults. So, I added calls
to interrupt_end, which does that, plus checks for reschedules. There
shouldn't be any of those, but x86 does the same thing, so I'm copying that
behavior to be safe.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is a bunch of compile fixes provoked by building UML with gcc 4. There
are a bunch of signedness mismatches, a couple of uninitialized references,
and a botched C99 structure initialization which had somehow gone unnoticed.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This makes the minimal fixes needed to make the UML iomem driver work in 2.6.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch is brought to you by the department of applied stupidity.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Adds meta collectors for all socket attributes that make sense
to be filtered upon. Some of them are only useful for debugging
but having them doesn't hurt.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Changing the sysctl net.core.dev_weight has no effect because the weight
of the backlog devices is set during initialization and never changed.
This patch propagates any changes to the global value affected by sysctl
to the per-cpu devices. It is done every time the packet handler
function is run.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Simple interface to allow changing network device scheduling weight
with sysfs. Please consider this for 2.6.12, since risk/impact is small.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix 5700/5701 DMA write corruption on Apple G4 by detecting the Apple
UniNorth PCI 1.5 chipset and adjusting the DMA write boundary to 16. DMA
test fails to detect the problem with this chipset.
Thanks to Manuel Perez Ayala for reporting the problem and helping to
debug it.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
break.b does not store the break number in cr.iim, instead it stores 0,
which makes all break.b instructions look like BUG(). Extract the
break number from the instruction itself.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Christian Hildner pointed out that the comment did not match what the
code does in cpu_init() when we set up the default control register.
Patch based on suggestions from Ken Chen.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Some bits of the kernel assume that gp always points to valid memory,
in particular PHYSICAL_MODE_ENTER() assumes that both gp and sp are
valid virtual addresses with associated physical pages. The IA64
module loader puts gp well past the end of the module, with no physical
backing. Offsets on gp are still valid, but physical mode addressing
breaks for modules. Ensure that gp always falls within the module
body. Also ensure that gp is 8 byte aligned.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch from Nicolas Pitre
Not that there might be many of them on the planet, but at least RMK
apparently has one.
Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Giorgio Padrin
The patch completes I2S GPIO alternate functions for PXA27x, adding I2S_SYSCLK.
File: pxa-regs.h .
Signed-off-by: Giorgio Padrin
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Kprobes was eating the hardware instruction and data address
breakpoint exceptions. This patch fixes it; kprobes doesn't use those
exceptions at all and should ignore them.
Signed-off-by: Ananth N Mavinakayanahalli <amavin@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
if num has a value of -1, accessing the digits[] array will fail and the
format string will be printed in funny way, or not at all. This happens if
one prints negative numbers.
Just change the code to match lib/vsprintf.c
asm/div64.h cant be used because u64 maps to u32 for this build.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The ARM copypage changes in 2.6.12-rc4-git1 removed the preempt locking
from the copypage functions which broke the XScale implementation.
This patch fixes the locking on XScale and removes the now unneeded
minicache code.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Checked-by: Richard Purdie
We should never apply a lookup intent to anything other than the last
path component in an open(), create() or access() call.
Introduce the helper nfs_lookup_check_intent() which always returns
zero if LOOKUP_CONTINUE or LOOKUP_PARENT are set, and returns the
intent flags if we're on the last component of the lookup.
By doing so, we fix a bug in open(O_EXCL), where we may end up
optimizing away a real lookup of the parent directory.
Problem noticed by Linda Dunaphant <linda.dunaphant@ccur.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
At least some VIA chipsets require the fixup even in IO-APIC mode.
This was found and debugged with the patient assistance of Stian
Jordet <liste@jordet.nu> on an Asus CUV266-DLS motherboard.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch disables the scroll feature on AT keyboards by default, because
it causes the numbers of mouse devices to shift, breaking user setups.
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6
transition.
Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage
for unified caches") triggered this bug and 405EP boards don't boot
anymore.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In file included from arch/i386/kernel/smp.c:235:
include/asm-i386/mach-numaq/mach_ipi.h:4: warning: `send_IPI_mask_sequence'
declared inline after its definition
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[AGPGART] Replace check_bridge_mode() with (bridge->mode & AGSTAT_MODE_3_0).
As mentioned earlier, the current check_bridge_mode() code assumes
that AGP bridges are PCI devices. This isn't always true. Definitely
not for HP zx1 chipset and the same seems to be the case for SGI's AGP
bridge.
The patch below fixes the problem by picking up the AGP_MODE_3_0 bit
from bridge->mode. I feel like I may be missing something, since I
can't see any reason why check_bridge_mode() wasn't doing that in the
first place. According to the AGP 3.0 specs, the AGP_MODE_3_0 bit is
determined during the hardware reset and cannot be changed, so it
seems to me it should be safe to pick it up from bridge->mode.
With the patch applied, I can definitely use AGP acceleration both
with AGP 2.0 and AGP 3.0 (one with an Nvidia card, the other with an
ATI FireGL card).
Unless someone spots a problem, please apply this patch so 3d
acceleration can work on zx1 boxes again.
This makes AGP work again on machines with an AGP bridge that isn't a
PCI device.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Dave Jones <davej@redhat.com>
When Linux is running on the Xen virtual machine monitor, physical
addresses are virtualised and cannot be directly referenced by the AGP
GART. This patch fixes the GART driver for Xen by adding a layer of
abstraction between physical addresses and 'GART addresses'.
Architecture-specific functions are also defined for allocating and freeing
the GATT. Xen requires this to ensure that table really is contiguous from
the point of view of the GART.
These extra interface functions are defined as 'no-ops' for all existing
architectures that use the GART driver.
Signed-off-by: Keir Fraser <keir@xensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
This patch fixes a problem with accessing GART memory in
sgi_tioca_insert_memory and sgi_tioca_remove_memory.
sgi-agp.c | 12 +++++++++---
1 files changed, 9 insertions(+), 3 deletions(-)
Signed-off-by: Mike Werner <werner@sgi.com>
Signed-off-by: Dave Jones <davej@redhat.com>
On ppc32, <asm/sigcontext.h> uses __user, but doesn't directly include
<linux/compiler.h>. This adds that in. Without this, glibc will not
compile.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On some 5701 devices with older bootcode, the LED configuration bits in
SRAM may be invalid with value zero. The fix is to check for invalid
bits (0) and default to PHY 1 mode. Incorrect LED mode will lead to
error in programming the PHY.
Thanks to Grant Grundler for debugging the problem.
>From Grant:
| In May, 2004, tg3 v3.4 changed how MAC_LED_CTRL (0x40c) was getting
| programmed and how to determine what to program into LED_CTRL. The new
| code trusted NIC_SRAM_DATA_CFG (0x00000b58) to indicate what to write
| to LED_CTRL and MII EXT_CTRL registers. On "IOX Core Lan", SRAM was
| saying MODE_MAC (0x0) and that doesn't work.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It was checking the "GET" function pointer instead of
the "SET" one. Looks like a cut&paste error :-)
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure that binfmt_flat passes the correct flags into do_mmap(). nommu's
validate_mmap_request() will simple return -EINVAL if we try and pass it a
flags value of zero.
Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
__do_follow_link() passes potentially worng vfsmount to touch_atime(). It
matters only in (currently impossible) case of symlink mounted on something,
but it's trivial to fix and that actually makes more sense.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Conditional mntput() moved into __do_follow_link(). There it collapses with
unconditional mntget() on the same sucker, closing another too-early-mntput()
race.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Getting rid of sloppy logics:
a) in do_follow_link() we have the wrong vfsmount dropped if our symlink
had been mounted on something. Currently it worls only because we never
get such situation (modulo filesystem playing dirty tricks on us). And
it obfuscates already convoluted logics...
b) same goes for open_namei().
c) in __link_path_walk() we have another "it should never happen" sloppiness -
out_dput: there does double-free on underlying vfsmount and leaks the covering
one if we hit it just after crossing a mountpoint. Again, wrong vfsmount
getting dropped.
d) another too-early-mntput() race - in do_follow_mount() we need to postpone
conditional mntput(path->mnt) until after dput(path->dentry). Again, this one
happens only in it-currently-never-happens-unless-some-fs-plays-dirty
scenario...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
shifted conditional mntput() into do_follow_link() - all callers were doing
the same thing.
Obviously equivalent transformation.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In open_namei() exit_dput: we have mntput() done in the wrong order -
if nd->mnt != path.mnt we end up doing
mntput(nd->mnt);
nd->mnt = path.mnt;
dput(nd->dentry);
mntput(nd->mnt);
which drops nd->dentry too late. Fixed by having path.mnt go first.
That allows to switch O_NOFOLLOW under if (__follow_mount(...)) back
to exit_dput, while we are at it.
Fix for early-mntput() race + equivalent transformation.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In open_namei() we take mntput(nd->mnt);nd->mnt=path.mnt; out of the if
(__follow_mount(...)), making it conditional on nd->mnt != path.mnt instead.
Then we shift the result downstream.
Equivalent transformations.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In open_namei(), __follow_down() loop turned into __follow_mount().
Instead of
if we are on a mountpoint dentry
if O_NOFOLLOW checks fail
drop path.dentry
drop nd
return
do equivalent of follow_mount(&path.mnt, &path.dentry)
nd->mnt = path.mnt
we do
if __follow_mount(path) had, indeed, traversed mountpoint
/* now both nd->mnt and path.mnt are pinned down */
if O_NOFOLLOW checks fail
drop path.dentry
drop path.mnt
drop nd
return
mntput(nd->mnt)
nd->mnt = path.mnt
Now __follow_down() can be folded into follow_down() - no other callers left.
We need to reorder dput()/mntput() there - same problem as in follow_mount().
Equivalent transformation + fix for a bug in O_NOFOLLOW handling - we used to
get -ELOOP if we had the same fs mounted on /foo and /bar, had something bound
on /bar/baz and tried to open /foo/baz with O_NOFOLLOW. And fix of
too-early-mntput() race in follow_down()
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
New helper: __follow_mount(struct path *path). Same as follow_mount(), except
that we do *not* do mntput() after the first lookup_mnt().
IOW, original path->mnt stays pinned down. We also take care to do dput()
before mntput() in the loop body (follow_mount() also needs that reordering,
but that will be done later in the series).
The following are equivalent, assuming that path.mnt == x:
(1)
follow_mount(&path.mnt, &path.dentry)
(2)
__follow_mount(&path);
if (path->mnt != x)
mntput(x);
(3)
if (__follow_mount(&path))
mntput(x);
Callers of follow_mount() in __link_path_walk() converted to (2).
Equivalent transformation + fix for too-late-mntput() race in __follow_mount()
loop.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In open_namei() we never use path.mnt or path.dentry after exit: or ok:.
Assignment of path.dentry in case of LAST_BIND is dead code and only
obfuscates already convoluted function; assignment of path.mnt after
__do_follow_link() can be moved down to the place where we set path.dentry.
Obviously equivalent transformations, just to clean the air a bit in that
region.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The first argument of __do_follow_link() switched to struct path *
(__do_follow_link(path->dentry, ...) -> __do_follow_link(path, ...)).
All callers have the same calls of mntget() right before and dput()/mntput()
right after __do_follow_link(); these calls have been moved inside.
Obviously equivalent transformations.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
mntget(path->mnt) in do_follow_link() moved down to right before the
__do_follow_link() call and rigth after loop: resp.
dput()+mntput() on non-ELOOP branch moved up to right after __do_follow_link()
call.
resulting
loop:
mntget(path->mnt);
path_release(nd);
dput(path->mnt);
mntput(path->mnt);
replaced with equivalent
dput(path->mnt);
path_release(nd);
Equivalent transformations - the reason why we have that mntget() is that
__do_follow_link() can drop a reference to nd->mnt and that's what holds
path->mnt. So that call can happen at any point prior to __do_follow_link()
touching nd->mnt. The rest is obvious.
NOTE: current tree relies on symlinks *never* being mounted on anything. It's
not hard to get rid of that assumption (actually, that will come for free
later in the series). For now we are just not making the situation worse than
it is.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fix for too early mntput() in open_namei() - we pin path.mnt down for the
duration of __do_follow_link(). Otherwise we could get the fs where our
symlink lived unmounted while we were in __do_follow_link(). That would end
up with dentry of symlink staying pinned down through the fs shutdown.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
path.mnt in open_namei() set to mirror nd->mnt.
nd->mnt is set in 3 places in that function - path_lookup() in the beginning,
__follow_down() loop after do_last: and __do_follow_link() call after
do_link:.
We set path.mnt to nd->mnt after path_lookup() and __do_follow_link(). In
__follow_down() loop we use &path.mnt instead of &nd->mnt and set nd->mnt to
path.mnt immediately after that loop.
Obviously equivalent transformation.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Replaced struct dentry *dentry in namei with struct path path. All uses of
dentry replaced with path.dentry there.
Obviously equivalent transformation.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
All callers of do_follow_link() do mntget() right before it and
dput()+mntput() right after. These calls are moved inside do_follow_link()
now.
Obviously equivalent transformation.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
OK, here comes a patch series that hopefully should close all
too-early-mntput() races in fs/namei.c. Entire area is convoluted as hell, so
I'm splitting that series into _very_ small chunks.
Patches alread in the tree close only (very wide) races in following symlinks
(see "busy inodes after umount" thread some time ago). Unfortunately, quite a
few narrower races of the same nature were not closed. Hopefully this should
take care of all of them.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Runtime feature support for unified caches was testing a userland feature
flag (PPC_FEATURE_UNIFIED_CACHE) instead of a cpu feature flag
(CPU_FTR_SPLIT_ID_CACHE). Luckily the current defined bit mask for cpu
features and userland features do not overlap so this only causes an issue
on machines with a unified cache, which is extremely rare on PPC today.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Stop using tty internal structure in mxser_receive_chars(), use
tty_insert_flip_char(tty, ch flag); instead.
Without this change driver ignores any rx'ed chars.
Run tested.
Cc: Alan Cox <alan@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fault_in_pages_readable() is being passed an incorrect `end' address, which
can result in writes accidentally faulting in pages which will not be affected
by the write() call.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Changed the return value of unknown type to NULL.
- Deleted the NULL check of dev_id in siu_interrupt().
- Deleted the NULL check of port->membase in siu_shutdown().
- Added the NULL check of port->membase to siu_startup().
- Removed early_uart_ops. Now using vr41xx_siu standerd one.
- Changed KSEG1ADDR() in siu_console_setup() to ioremap().
- When uart_add_one_port() failed, changed to set NULL to port->dev.
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The system might hang when using appldata_mem with high I/O traffic and a
large number of devices. The spinlocks bdev_lock and swaplock are acquired
via calls to si_meminfo() and si_swapinfo() from a tasklet, i.e. interrupt
context, which can lead to a deadlock. Replace tasklet with work queue.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The condition for no context in do_exception checks for hard and soft
interrupts by using in_interrupt() but not for preemption. This is bad for
the users of __copy_from/to_user_inatomic because the fault handler might call
schedule although the preemption count is != 0. Use in_atomic() instead
in_interrupt().
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
To make UML build and run on s390, I needed to do these two little
changes:
1) UML includes some of the subarch's (s390) headers. I had to
change one of them with the following one-liner, to make this
compile. AFAICS, this change doesn't break compilation of s390
itself.
2) UML needs to intercept syscalls via ptrace to invalidate the syscall,
read syscall's parameters and write the result with the result of
UML's syscall processing. Also, UML needs to make sure, that the host
does no syscall restart processing. On i386 for example, this can be
done by writing -1 to orig_eax on the 2nd syscall interception
(orig_eax is the syscall number, which after the interception is used
as a "interrupt was a syscall" flag only.
Unfortunately, s390 holds syscall number and syscall result in gpr2 and
its "interrupt was a syscall" flag (trap) is unreachable via ptrace.
So I changed the host to set trap to -1, if the syscall number is changed
to an invalid value on the first syscall interception.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The special cases of peek and poke on acrs[15] and the fpc register are not
handled correctly. A poke on acrs[15] will clobber the 4 bytes after the
access registers in the thread_info structure. That happens to be the kernel
stack pointer. A poke on the fpc with an invalid value is not caught by the
validity check. On the next context switch the broken fpc value will cause a
program check in the kernel. Improving the checks in peek and poke fixes
this.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When fsync() runs wait_on_page_writeback_range() it only inspects pages which
are actually under I/O (PAGECACHE_TAG_WRITEBACK). If a page completed I/O
prior to wait_on_page_writeback_range() looking at it, it is supposed to have
recorded its I/O error state in the address_space.
But mpage_mpage_end_io_write() forgot to set the address_space error flag in
this case.
Signed-off-by: Qu Fuping <fs@ercist.iscas.ac.cn>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Deepak Saxena
The IXDP2800 bootloader does not disable IRQs before jumping into
the kernel and this is causing the Grand Unified KGDB to crash
the system when we do an early call to trap_init() and irq handlers
have not yet been registered. This patch disables IRQs before we
jump into the kernel.
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
A typo in prom_find_machine_type from Ben's recent patch "ppc64: Fix
result code handling in prom_init" prevents pSeries LPAR systems from
booting.
Tested on a pSeries 570 and OpenPower 720 (both Power5 LPAR).
Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Todd Poynor
PXA27x sleep fixes:
* set additional sleep/wakeup registers for Mainstone boards.
* move CKEN=0 to pxa25x-specific code; that value is harmful on pxa27x.
* save/restore additional registers, including some found necessary for
C5 processors and/or newer blob versions.
* enable future support of additional sleep modes for PXA27x (eg,
standby, deep sleep).
* split off cpu-specific sleep processing between pxa27x and pxa25x into
separate files (partly in preparation for additional sleep modes).
Includes fixes from David Burrage.
Signed-off-by: Todd Poynor
Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Mike Frysinger
the ELF_DATA define in both arm asm subdirs of linux/include/ contain a
semicolon at the end. this of course will cause any code that tries to use
ELF_DATA in assignment or comparison to fail. no other arch has a semicolon
in their ELF_DATA defines.
Signed-off-by: Mike Frysinger
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Albrecht Dre
Problem:
When a module requests a DMA channel via the function s3c2410_dma_request(), this function requests the appropriate irq under the name of the client module. When the client module is unloaded, it calls s3c2410_dma_free() which does not free the irq. Consequently, when e.g. running "cat /proc/interrupts", the irq owner points to freed memory, leading to a kernel oops.
File:
linux/arch/arm/mach-s3c2410/dma.c
Fix:
trivial, below
Signed-off-by: Albrecht Dre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Deepak Saxena
This patch fixes the following warnings:
include/asm/arch/io.h: In function `insw':
include/asm/arch/io.h:78: warning: comparison of distinct pointer types
lacks acast
include/asm/arch/io.h:79: warning: comparison of distinct pointer types
lacks acast
include/asm/arch/io.h: In function `outsw':
include/asm/arch/io.h:103: warning: comparison of distinct pointer types
lacks a cast
include/asm/arch/io.h:104: warning: comparison of distinct pointer types
lacks a cast
include/asm/arch/io.h: In function `inw':
include/asm/arch/io.h:127: warning: comparison of distinct pointer types
lacks a cast
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Fix a bug in which shub_1_1_found is not being properly initialized or set,
resulting in the improper setting of sn_hub_info->shub_1_1_found.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Re-work the m68knommu specific idle code according to suggestions
from Nick Piggin <nickpiggin@yahoo.com.au>.
A couple of rules that we need to follow:
1. Preempt should now disabled over idle routines. Should only be enabled
to call schedule() then disabled again.
3. When cpu_idle finds (need_resched() == 'true'), it should call schedule().
It should not call schedule() otherwise.
Also fix interrupt locking around the need_resched() and cpu stop state
so that there is no race condition.
Signed-off-by: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This "obvious" one-liner is needed to recognize Zaurus SL 6000;
it just checks two GUIDs not just one.
OSDL bugids #4512 and #4545 seem to be duplicates of this report.
From: Gerald Skerbitz <gsker@tcfreenet.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Correct incorrect locking order in qla2xxx_eh_abort() handler which
would case a hang during certain code-paths.
With extra pieces to fix the irq state in the locks.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Added support to get/set flow control line levels using TIOCMGET and
TIOCMSET.
Added support for RTSCTS hardware flow control.
cp2101_get_config and cp2101_set_config modified to support long request
strings, required for configuring flow control.
Signed-off-by: Craig Shelley craig@microtron.org.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
On Wed, May 04, 2005 at 01:37:30PM -0700, David Brownell wrote:
> On Wednesday 04 May 2005 12:19 pm, Roman Kagan wrote:
> > struct urb {
> > /* private, usb core and host controller only fields in the urb */
> > ...
> > struct list_head urb_list; /* list pointer to all active urbs */
> > ...
> > };
> >
> > Is it safe to use it for driver's purposes when the driver owns the urb,
> > that is, starting from the completion routine until the urb is submitted
> > with usb_submit_urb()?
>
> Right now, it should be.
Great! FWIW I've briefly tested a modified version of usbatm using
the list head in struct urb instead of creating a wrapper struct, and I
haven't seen any failures yet. So I tend to believe that your "should
be" actually means "is" :)
> > If it is, can it be guaranteed in future, e.g.
> > by moving the list head into the public section of struct urb?
>
> In fact I'm not sure why it ever got called "private" to usbcore/hcds.
> I thought the idea was that it should be like urb->status, reserved for
> whoever controls the URB.
OK then how about the following (essentially documentation) patch?
Signed-off-by: Roman Kagan <rkagan@mail.ru>
Acked-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The original entry of this patch was submitted by Filippo Bardelli
<filibard@libero.it>, with cleanups and patch-ification by me.
This corrects the subclass that the device reports.
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch makes the code to provide modalias in sysfs for usb devices
56 bytes smaller in i386, while making it clear that the first part of
the modalias string is the same no matter what the device class is.
Signed-Off-By: Paulo Marques <pmarques@grupopie.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds a new driver for "Option" cards. This is a GSM data card,
controlled by three "serial ports" which are connected via an OHCI adapter,
all located on an oversized PC-Card. It's sold by several GSM service
providers.
Traditionally, this card has been accessed via the standard serial driver
and appropriate vendor= and product= options. However, testing has
revealed several problems with this approach, including hung data transfers
and lost data blocks when receiving.
Therefore, I've written a separate driver.
Signed-off-by: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
They aren't really HID devices.
Damm microsoft HID driver, that thing has caused more companies to have
to do this kind of hack...
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds the DeLorme Earthmate lt-20 productid to the hid
blacklist table. This patch ensures the lt-20 can be claimed by the
appropriate driver (cypress_m8).
Adds the product id 0x200, of the DeLorme Earthmate lt-20, to the hid
blacklist table.
Signed-off-by: Lonnie Mendez <lmendez19@austin.rr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch removes the outdated ChangeLog file for this driver.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
When the hardware header size is a multiple of HH_DATA_MOD, HH_DATA_OFF()
incorrectly returns HH_DATA_MOD (instead of 0). This affects ieee80211 layer
as 802.11 header is 32 bytes long.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
o use a semaphore instead of an opencoded and racy lock
o move locking out of shaper_kick and into the callers - most just
released the lock before calling shaper_kick
o remove in_interrupt() tests. from ->close we can always block, from
->hard_start_xmit and timer context never
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The times when tricky goto's produced better codes are long gone.
This patch should express the same in a better way.
(Also fixes the final gcc-4.0 x86 compile error)
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Now that we have HZ=1000 there is much less of a need for decr_overclock.
Remove it.
Leave spread_lpevents but move it into iSeries_setup.c. We should look at
making event spreading the default some day.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The iseries has a bar graph on the front panel that shows how busy it is.
The operating system sets and clears a bit in the CTRL register to control
it.
Instead of going to the complexity of using a thread info bit, just set and
clear it in the idle loop.
Also create two helper functions, ppc64_runlatch_on and ppc64_runlatch_off.
Finally don't use the short form of the SPR defines.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There are a bunch of irrelevant SPR definitions in asm/processer.h. Cut
them down a bit, also add a DABR_TRANSLATION define which will be used
shortly.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix a bug in list scanning that can cause us to skip the last buffer on the
checkpoint list (and hence fail to do any progress under some rather
unfavorable conditions).
The problem is we first do jh=next_jh and then test
} while (jh!=last_jh);
Hence we skip the last buffer on the list (if it was not the only buffer on
the list). As we already do jh=next_jh; in the beginning of the loop we
are safe to just remove the assignment in the end. It can happen that 'jh'
will be freed at the point we test jh != last_jh but that does not matter
as we never *dereference* the pointer.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix possible false assertion failure in log_do_checkpoint(). We might fail
to detect that we actually made a progress when cleaning up the checkpoint
lists if we don't retry after writing something to disk. The patch was
confirmed to fix observed assertion failures for several users.
When we flushed some buffers we need to retry scanning the list.
Otherwise we can fail to detect our progress.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
prom_init(), the trampoline code that "talks" to Open Firmware during
early boot, has various issues with managing OF result codes. Some of my
recent fixups in fact made the problem worse on some platforms.
This patch reworks it all. Tested on g5, Maple, POWER3 and POWER5.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This gets rid of an unused variable `error' in sys_ia32.c:sys32_epoll_wait()
Getting rid of this one makes parsing the output of the kernecomp
autobuild easier --- searching for `Error' to find a problem kept
hitting this one, even though it's only a warning.
Signed-off-by: Tony Luck <tony.luck@intel.com>
The attached patch cleans up a compilation warning when ACPI
is turned off (i.e., when compiling for the Ski simulator).
Signed-off-by: Tony Luck <tony.luck@intel.com>
This cleans up the /proc/device-tree representation of the Open Firmware
device-tree on ppc and ppc64. It does the following things:
- Workaround an issue in some Apple device-trees where a property may
exist with the same name as a child node of the parent. We now
simply "drop" the property instead of creating duplicate entries in
/proc with random result...
- Do not try to chop off the "@0" at the end of a node name whose unit
address is 0. This is not useful, inconsistent, and the code was
buggy and didn't always work anyway.
- Do not create symlinks for the short name and unit address parts of a
node. These were never really used, bloated the memory footprint of
the device-tree with useless struct proc_dir_entry and their matching
dentry and inode cache bloat.
This results in smaller code, smaller memory footprint, and a more
accurate view of the tree presented to userland.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is the ppc32 patch equivalent to the just posted ppc64 one working
around a bug in Apple device-trees regarding the "cpus" nodes.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Apple's Open Firmware has a funny bug when creating the /cpus nodes
where it leaves a dangling '\0' character in the CPU name which ends up
appearing in the full path of the node. This is bogus and
confuses /proc/device-tree badly.
This patch strips those bogus zero's from the node full path when
reading the device-tree from Open Firmware. The "name" property is not
modified and still contains the spurrious 0 (it basically contains 0
tailing 0 instead of one) but that shouldn't be a problem.
An equivalent patch for ppc32 will follow shortly
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The initial peek read PIO of the match register is just a waste.
Just do the flush writes first, as that is more efficient.
Signed-off-by: David S. Miller <davem@davemloft.net>
Changes to the cpufreq stats driver:
* Changes the way P-state transition table looks in /sysfs providing more
clear output
* Changes the time unit in the output from HZ to clock_t
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
As mandated by the spec, disable timer around transitions.
From code by : Ken Staton <ken_staton@agilent.com
Signed-off-by: Dave Jones <davej@redhat.com>
The spec states that we have to do this, which is *horrid*.
Based on code from: Ken Staton <ken_staton@agilent.com>
Signed-off-by: Dave Jones <davej@redhat.com>
[PATCH] [5/5] ondemand governor default sampling downfactor as 1
Make default sampling downfactor 1.
This works better with earlier auto downscaling change in ondemand governor.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
[PATCH] [4/5] ondemand governor automatic downscaling
Here is a change of policy for the ondemand governor. The modification
concerns the frequency downscaling. Instead of decreasing to a lower
frequency when the CPU usage is under 20%, this new policy automatically
scales to the optimal frequency. The optimal frequency being the lowest
frequency which provides enough power to not trigger the upscaling policy.
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
[PATCH] [3/5] ondemand,conservative governor idle_tick clean-up
Ondemand and conservative governor clean-up, it factorises the idle ticks
measurement.
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
[PATCH] [2/5] ondemand,conservative governor store the idle ticks for all cpus
Ondemand, conservative governor did not store prev_cpu_idle_up into
prev_cpu_idle_down for other CPUs than the current CPU.
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
[PATCH] [1/5] ondemand,conservative minor bug-fix and cleanup
Attached patch fixes some minor issues with Alexander's patch and related
cleanup in both ondemand and conservative governor.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Adds support so that the cpufreq change stepping is no longer fixed at 5% and
can be changed dynamically by the user
Signed-off-by: Alexander Clouter <alex-kernel@digriz.org.uk>
Signed-off-by: Dave Jones <davej@redhat.com>
A new cpufreq module, based on the ondemand one with my additional patches
just posted. This one is more suitable for battery environments where its
probably more appealing to have the cpu freq gracefully increase and decrease
rather than flip between the min and max freq's.
N.B. Bruno Ducrot pointed out that the amd64's "do have unacceptable latency
between min and max freq transition, due to the step-by-step requirements
(200MHz IIRC)"; so AMD64 users would probably benefit from this too.
Signed-off-by: Alexander Clouter <alex-kernel@digriz.org.uk>
Signed-off-by: Dave Jones <davej@redhat.com>
Fix up comment in cpufreq.h stating transition latency should be passed
in microseconds -- it was decided long ago to switch to nanoseconds.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
With the release of the dual-core AMD Opterons last week,
it's high time that cpufreq supported them. The attached
patch applies cleanly to 2.6.12-rc3 and updates powernow-k8
to support the latest Athlon 64 and Opteron processors.
Update the driver to version 1.40.0 and provide support
for dual-core processors.
Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com>
Signed-off-by: Dave Jones <davej@redhat.com>
This patch makes a needlessly global and EXPORT_SYMBOL'ed struct static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave Jones <davej@redhat.com>
Some cpufreq drivers (at that time, only powernow-k7) need to recalibrate the
cpu_khz at runtime.
Signed-off-by: Bruno Ducrot <ducrot@poupinou.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
We have to recalibrate cpu_khz in order to use the current FID instead the max
FID since some BIOS do not put the processor at maximum frequency at POST.
Also, some BIOS will change the processor frequency at our back after cpu_khz
was calibrate. Finally, this will fix a long standing bug when we do
something like this:
# rmmod powernow-k7
# modprobe powernow-k7
Signed-off-by: Bruno Ducrot <ducrot@poupinou.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
This comes up time and time again. Until its fixed, place this
comment in the Kconfig which should stem the flow of resubmissions.
Signed-off-by: Rob Weryk <rjweryk@uwo.ca>
Signed-off-by: Dave Jones <davej@redhat.com>
The speedstep-smi driver actually works on >=1 notebook with a
Pentium 4-M CPU where all other cpufreq drivers fail. Therefore,
allow speedstep-smi on P4Ms again, but warn users of likely failure
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
Trivial ondemand governor clean-ups:
- change from sampling_rate_in_HZ() to the official function
usecs_to_jiffies().
- use for_each_online_cpu() to instead of using "if (cpu_online(i))"
Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
The Pentium 4 - Ms (HT) with CPUID 0xF34 and 0xF41 seem to support
centrino-like enhanced speedstep; however, no "table" support is possible.
Therefore, put NULL entries into speedstep-centrino.c
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Dave Jones <davej@redhat.com>
cpufreq core is printing out messages at KERN_WARNING level that the core
recovers from without intervention, and that the system administrator can
do nothing about. Patch below reduces the severity of these messages to
debug.
Signed-off-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
Firstly, if the direction is TODEVICE, then dirty data in the
streaming cache is impossible so we can elide the flush-flag
synchronization in that case.
Next, the context allocator is broken. It is highly likely
that contexts get used multiple times for different dma
mappings, which confuses the strbuf flushing code and makes
it run inefficiently.
Signed-off-by: David S. Miller <davem@davemloft.net>
Unused indices which are ignored while walking must still
be counted to avoid dumping the same index twice.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
in fs/udf/udftime.c the global array '__mon_yday' is not static, and it
conflicts with the glibc one when the kernel is compiled as user mode.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In file included from drivers/firmware/pcdp.c:18:
drivers/firmware/pcdp.h:48: error: field `addr' has incomplete type
drivers/firmware/pcdp.c: In function `setup_serial_console':
drivers/firmware/pcdp.c:27: error: `ACPI_ADR_SPACE_SYSTEM_MEMORY' undeclared (first use in this function)
Cc: <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
flush_icache_range() is used in two different situation - in binfmt_elf.c &
co for user space mappings and module.c for kernel modules. On m68k
flush_icache_range() doesn't know which data to flush, as it has separate
address spaces and the pointer argument can be valid in either address
space.
First I considered splitting flush_icache_range(), but this patch is
simpler. Setting the correct context gives flush_icache_range() enough
information to flush the correct data.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We used to have an iseries specific profiler that used /proc/profile. Now
thats gone we can use the generic timer based stuff.
Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is a neverending story
linux/acpi.h contains empty declarations for acpi_boot_init() &
acpi_boot_table_init() but they are nested inside #ifdef CONFIG_ACPI.
So we'll have to #ifdef in arch/i386/kernel/setup.c: setup_arch()
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Cc: "Brown, Len" <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Here is my third attempt at a patch to further update the CompactPCI
hotplug driver infrastructure to address the pci_enable_device issue
discussed on the list as well as a few other issues I discovered during
some more testing. This version addresses a few more issues pointed out
by Prarit Bhargava. Changes include:
- cpci_enable_device and its recursive calling of pci_enable_device on
new devices removed.
- Use list_rwsem to avoid slot status change races between disable_slot
and check_slots.
- Fixed oopsing in cpci_hp_unregister_bus caused by calling list_del on
a slot after calling pci_hp_deregister.
- Removed kfree calls in cleanup_slots since release_slot will have
done it already.
- Reworked init_slots a bit to fix latch and adapter file updating on
subsequent calls to cpci_hp_start.
- Improved sanity checking in cpci_hp_register_controller.
- Now shut things down correctly in cpci_hotplug_exit.
- Switch to pci_get_slot instead of deprecated pci_find_slot.
- A bunch of CodingStyle fixes.
Signed-off-by: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Current shpchp driver doesn't seem to program command register to
enable PERR and SERR properly. The following patch fixes this issue.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Current shpchp driver doesn't seem to program _HPP values
properly. The following patch fixes this issue.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
At module load time, if a generic device is found, the tty information
for the device is not set up properly (as the tty structures aren't initialized
yet.) This can cause big problems for things like udev. This patch fixes this.
Thanks to Kay Sievers for the original patch for this problem.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ftdi_sio: Add PID for "ELV USB Module UM100".
PID sent by Armin Laugher.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This adds support for a CF-card USB Host adapter, the Ratoc REX-CFU1U, by
wrapping a PCMCIA driver around the existing "sl811-hcd" platform driver.
This CF card is especially useful for PDAs, which currently tend to have
no other solution for USB host capability.
From: Botond Botyanszki <boti@rocketmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Various fixes to the sl811-hcd driver:
* Fix small glitches that crept in during recent evolution of usbcore's hcd
glue layer, coupling endpoint state records to usbcore and active urbs.
(As noted by folk whose boards weren't stuck on 2.6.9 kernels...)
* Cope with various system-specific issues:
- Some configurations (e.g. a CF-card uses this chip) have iospace
addresses for the two registers, rather than memory mapped ones.
- Some configurations do interesting things with IRQs; maybe the
line is shared, or it doesn't support level triggering.
- Not all boards can drive the chip reset line in software.
* Address a potential race during unlinking.
* Tweak probe/remove section info to handle the case where this segment
of a platform bus is hotpluggable (e.g. CF card). (The basic problem
is that CONFIG_HOTPLUG is global, which is wrong since not all busses
can hotplug even on hotplug-friendly systems...) Also export the
driver, so that the CF driver can depend on it.
Also removed some annoying end-of-line whitespace.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes "grave" bugs in i2c-ali1563 driver. It seems on recent
chipset revisions the HSTS_DONE is set only for block transfers, so we
must detect the end of ordinary transaction other way. Also due to missing
and mask, setting other transfer modes was not possible. Moreover the
continous byte mode transfer uses DAT0 for command rather than CMD command.
All those changes were tested with help of Chunhao Huang from Winbond.
I'm willing to maintain the driver. Second patch adds me as maintainer
if this is neccessary.
Signed-Off-By: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Only the address needs alignment of mask bits, length should work with
a relaxed alignment check.
Signed-off-by: Jens Axboe <axboe@suse.de>
[ This is take 2: make the length check be for 16-byte alignment, not
just word alignment. That should hopefully keep everybody happy,
while still allowing CD writing with DMA ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When I sent in the patch adding the code for the kernel to tell the
firmware about its capabilities on pSeries machines, I included the
function to give the capabilities to firmware but somehow forgot the
hunk that adds the call to the new function. This patch adds the
call.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Steven Hand <Steven.Hand@cl.cam.ac.uk> wrote:
>
> Reconstructed forward trace:
>
> net/ipv4/udp.c:1334 spin_lock_irq()
> net/ipv4/udp.c:1336 udp_checksum_complete()
> net/core/skbuff.c:1069 skb_shinfo(skb)->nr_frags > 1
> net/core/skbuff.c:1086 kunmap_skb_frag()
> net/core/skbuff.h:1087 local_bh_enable()
> kernel/softirq.c:0140 WARN_ON(irqs_disabled());
The receive queue lock is never taken in IRQs (and should never be) so
we can simply substitute bh for irq.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
When we have ip_queue being used from LOCAL_IN, then we end up with a
situation where the verdicts coming back from userspace traverse the TCP
input path from syscall context. While this seems to work most of the
time, there's an ugly deadlock:
syscall context is interrupted by the timer interrupt. When the timer
interrupt leaves, the timer softirq get's scheduled and calls
tcp_delack_timer() and alike. They themselves do bh_lock_sock(sk),
which is already held from somewhere else -> boom.
I've now tested the suggested solution by Patrick McHardy and Herbert Xu to
simply use local_bh_{en,dis}able().
Signed-off-by: Harald Welte <laforge@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
We are intentionally ignoring the copy_to_user() value,
make it clear to the compiler too.
Noted by Jeff Garzik.
Signed-off-by: David S. Miller <davem@davemloft.net>
It cannot work properly, so just ignore it in drr
and rr multipath algorithms just like the random
multipath algorithm does.
Suggested by Herbert Xu.
Signed-off by: Pravin B. Shelar <pravins@calsoftinc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds is_multicast_ether_addr() to go along with
is_valid_ether_addr() and friends. It then changes
is_valid_ether_addr() to use the new macro, and fixes up the comment
on that function to move implementation details out of the API doco.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add an option to make secondary IP addresses get promoted
when primary IP addresses are removed from the device.
It defaults to off to preserve existing behavior.
Signed-off-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add tg3_nvram_lock() and tg3_nvram_unlock() calls around tg3_halt_cpu().
It is possible that the bootcode may be loading code from nvram during
this call and stopping the cpu without getting the lock may cause
uncompleted nvram data to be left in the nvram data register. Subsequent
calls to read/write nvram data will fail.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This test uses the previously added tg3_test_interrupt() to perform the
test.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The test will loopback one packet in MAC loopback mode and verify the
packet data.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add a reset kind parameter to tg3_halt() so that the RESET_KIND_SUSPEND
parameter can be passed to tg3_halt() before doing offline tests.
All other calls to tg3_halt() will use the RESET_KIND_SHUTDOWN
parameter.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This improves the bridge local receive path by avoiding going
through another softirq. The bridge receive path is already being called
from a netif_receive_skb() there is no point in going through another
receiveq round trip.
Recursion is limited because bridge can never be a port of a bridge
so handle_bridge() always returns.
Signed-off-by: David S. Miller <davem@davemloft.net>
Avoid poisoning of the bridge forwarding table by frames that have been
dropped by filtering. This prevents spoofed source addresses on hostile
side of bridge from causing packet leakage, a small but possible security
risk.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make features of the bridge pseudo-device be a subset of the underlying
devices. Motivated by Xen and others who use bridging to do failover.
Signed-off-by: Catalin BOIE <catab at umrella.ro>
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The features field in netdevice is really a bitmask, and bitmask's should
be unsigned.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Resend of earlier patch (no changes) from Catalin used to provide
device feature change notification.
Signed-off-by: Catalin BOIE <catab at umbrella.ro>
Acked-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trying to initialize the i8259 PIC will not work if CONFIG_PCI is not
enabled. The kernel hangs if the initialization is tried.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The call to io_block_mapping was creating an invalid BAT entry because the
value of BCSR_SIZE (32K) is too small to be used in a BAT (128K min). This
change removes the io_block_mapping call since these registers can easily
be mapped using ioremap at the point of use.
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The error checking for emulation of load string instructions was overly
generous and would cause certain valid forms of the instructions to be
treated as illegal. We drop the range checking since the architecture
allows this to be boundedly undefined. Tests on CPUs that support these
instructions appear not do cause illegal instruction traps on range errors
and just allow the execution to occur.
Thanks to Kim Phillips for debugging this and figuring out what real HW was
doing.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The patch that introduced support for the VIA chipset broke building if
CONFIG_PCI is disabled.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds on-chip PCI bridge support for the PQ2 family. The
incomplete existent code is updated with interrupt handling stuff and
board-specific bits for 8272ADS and PQ2FADS; the related files were renamed
(from m8260_pci to m82xx_pci) to be of more generic fashion. This is
tested with 8266ADS and 8272ADS, should work on PQ2FADS as well.
Signed-off-by: Vitaly Bordug <vbordug@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some debug registers needed to be initialized early on to allow proper
support for KGDB. Additionally, we need to setup the
ppc.md_early_serial_map function pointer on boards that have serial support
for KGDB.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The existing make rule when building a uImage would check to see if the
image file existed to report 'is ready' or 'not made'. However make
appeared to compute the file list before the rule was executed.
Signed-off-by: Chris Clark <cpclark@xmission.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This var is currently useless, as it's apparent from reading the code. Until
2.6.11 it was used in some code related to jail mode, in the same proc.:
if(jail){
while(!reading) sched_yield();
}
jail mode has been dropped, together with that use, so let's finish dropping
this.
Also, remove some other useless definitions I met.
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix it a bit (after some cross checking with "man arch_prctl"). There were:
*) typos FS/GS and back
*) FS in place of FS_BASE (and the same for GS)
*) the procedure used put_user on &addr, where addr was the parameter (i.e.
changed its param with put_user, completely useless) rather than interpreting
addr as a pointer, as requested in this case (see the man page).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Port Paulus's ppc64 fix to sh:
When the generic IRQ stuff went in, it seems that HARDIRQ_BITS got bumped
from 9 (for ppc64) up to 12. Consequently, the PREEMPT_ACTIVE bit is now
within HARDIRQ_MASK, and I get in_interrupt() falsely returning true when
PREEMPT_ACTIVE is set, and thus a BUG_ON tripping in arch/ppc64/mm/tlb.c.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Copy (and adapt) to UML the stack code dumper used in i386 when
CONFIG_FRAME_POINTER is enabled.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Until now, FRAME_POINTER was set = DEBUG_INFO for UML. Change it to be the
default way, so that it can be enabled alone (for instance to get better
backtraces on crashes). The call-trace dumper which uses the frame pointer is
not yet in, I'm going to introduce it in a separate patch.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a MODULE_LICENSE("GPL") to the driver, remove some unused macros and add
the GPL license (it's GPL-licensed anyway since it's a GPL-derivative, apart
that Jeff Dike releases GPL software, in case anybody is wondering).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Actually, the real support was added by some earlier patches. Now we simply
re-enable the config. option. I've actually tested it and it works well.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This removes two now unused files and a couple of unused functions.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We need to disable signals on exit in all cases, not just when rebooting.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove old useless header that was used in Ye Olde Times during 2.4->2.5
porting to abstract differences. It's definitions are no more used anyway, so
let's finally kill it.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We should turn off kmalloc when getting a fatal signal regardless of the mode
we're in.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Eliminate an unused variable warning in ptrace.c and a size mismatch warning
by adding a cast to __pa.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Cleanup unnecessary (and undesirable) casts, demodulator_priv is already a
void*. Suggestion from Andrew Morton
Signed-off-by: Manu Abraham <manu@kromtek.com>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The bug was visible as a warning with gcc-3.4.4 (prerelease)
Message:
drivers/media/dvb/bt8xx/dst.c:1349: warning: initialization from
incompatible pointer type.
Signed-off-by: Manu Abraham <manu@kromtek.com>
Cc: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On Nov 16 2004 a change to intelfbdrv.c was commited (as part of 0.9.2 it
looks like) that added __initdata to all of the module param variables that
seems to create the opportunity for an oops.
I've recently been chasing an OOPS
(http://marc.theaimsgroup.com/?l=linux-kernel&m=111552250920370&w=2) I
created by reading every file on the /sys file system and I've traced it
back to this code in the intelfbdrv. Though I had root privs in my initial
problem report, it turns out they are un-necessary to generate the oops -
all you've got to do is "cat /sys/module/intelfb/parameters/mode" enough
times and eventually it will oops.
This is because sysfs automatically exports all module_param declarations
to the sysfs file system.. which means those variables can be dynamically
evaluated at any later time, which of course means marking them __initdata
is a bad idea ;).. when they happen to be char *'s it is an especially bad
idea ;).
Applying the patch below clears up the OOPS for me.
Signed-off-by: Patrick McManus <mcmanus@ducksong.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Do not send empty events to gpm. (Keyboards are assumed to have scroll
wheel these days, that makes them part-mouse. That means typing on
keyboard generates empty mouse events).
From: Dmitry Torokhov <dtor_core@ameritech.net>
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Recent kernels occasionally trigger a PMU timeout on some mac laptops,
typically on wakeup from sleep. This seem to be caused by either a too big
latency caused by the cpufreq switch on wakeup from sleep or by an
interrupt beeing lost due to the reset of the interrupt controller done
during wakeup.
This patch makes that code more robust by stopping PMU auto poll activity
around cpufreq changes on machines that use the PMU for such changes (long
latency switching involving a CPU hard reset and flush of all caches) and
by removing the reset of the open pic interrupt controller on wakeup (that
can cause the loss of an interrupt and Darwin doesn't do it, so it must not
be necessary).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The "unhandled interrupts" catcher, note_interrupt(), increments a global
desc->irq_count and grossly damages scaling of very large systems, e.g.,
>192p ia64 Altix, because of this highly contented cacheline, especially
for timer interrupts. 384p is severely crippled, and 512p is unuseable.
All calls to note_interrupt() can be disabled by booting with "noirqdebug",
but this disables the useful interrupt checking for all interrupts.
I propose eliminating note_interrupt() for all per-CPU interrupts. This
was the behavior of linux-2.6.10 and earlier, but in 2.6.11 a code
restructuring added a call to note_interrupt() for per-CPU interrupts.
Besides, note_interrupt() is a bit racy for concurrent CPU calls anyway, as
the desc->irq_count++ increment isn't atomic (which, if done, would make
scaling even worse).
Signed-off-by: John Hawkes <hawkes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
num_cache_leaves is used in __devexit cache_remove_dev() and can therefore
not be __devinit.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It appears that another test has been added in the Uniform CDROM layer that
must be passed before a DVD-RAM is considered writeable. This patch
implements an emulation of the needed packet command for the viocd driver.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The g5 support code broke some earlier models unfortunately as those bail
out early from the detect function, before the point where I added the code
to locate the PCI device for use with DMA allocations.
This patch fixes it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds a missing attribute to pmac cpufreq so that
"scaling_available_frequencies" works. It also cleans up the duplicate
definitions for low and high speed constants.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: John Clemens <clemej@alum.rpi.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The neutering of the pwc driver was incomplete. It still references
some now-dead files..
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
because it interferes with ALPS touchpad detection and
causes horrible death on reboot. Since P10 does not have
external PS/2 ports MUX mode does not have any advantages
over legacy mode anyway.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
mapped twice, resulting in it being the last (instead
of first) button on a joystick.
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
sends an incorrect ID and wasn't recognized.
Reported-by: Stefan Seyfried <seife@suse.de>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
when no i8042 controller (not PnP, not legacy) is present.
From: Kurt Garloff <garloff@suse.de>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
for i386, it's printed on many machines and usually is not
a cause for worry.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
This patch adds dummy gameport_register_port, gameport_unregister_port
and gameport_set_phys functions to gameport.h for the case when a driver
can't use gameport.
This fixes the compilation of some OSS drivers with GAMEPORT=n without
the need to #if inside every single driver.
This patch also removes the non-working and now obsolete SOUND_GAMEPORT.
This patch is also an alternative solution for ALSA drivers with similar
problems (but #if's inside the drivers might have the advantage of
saving some more bytes of gameport is not available).
The only user-visible change is that for GAMEPORT=m the affected OSS
drivers are now allowed to be built statically (but they won't have
gameport support).
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
The previous patch did not compile cleanly on all architectures so
here's a fixed one which #includes <linux/dma-mapping.h>.
Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
pci_set_dma_mask() or pci_set_consistent_dma_mask()
This patch includes dma-mapping.h explicitly because it caused errors
on some architectures otherwise.
See http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for details
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Domen Puncer <domen@coderock.org>
diff -puN drivers/scsi/ahci.c~dma_mask-drivers_scsi_ahci drivers/scsi/ahci.c
The previous patch did not compile cleanly on all architectures so
here's a fixed one which #includes <linux/dma-mapping.h>.
Use the DMA_{64,32}BIT_MASK constants from dma-mapping.h when calling
pci_set_dma_mask() or pci_set_consistent_dma_mask()
This patch includes dma-mapping.h explicitly because it caused errors
on some architectures otherwise.
See http://marc.theaimsgroup.com/?t=108001993000001&r=1&w=2 for details
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Domen Puncer <domen@coderock.org>
diff -puN drivers/scsi/sata_vsc.c~dma_mask-drivers_scsi_sata_vsc drivers/scsi/sata_vsc.c
Even after the previous fix you can still set CONFIG_ACPI_BOOT
indirectly even without CONFIG_ACPI by choosing CONFIG_PCI and
CONFIG_PCI_MMCONFIG.
That doesn't build very well either.
This makes PCI_MMCONFIG depend on ACPI, fixing that hole.
[ I guess in theory Kconfig could follow the whole chain of dependencies
for things that get selected, but that sounds insanely complicated, so
we'll just fix up these things by hand. --Linus ]
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix 2.6.12 CONFIG_ACPI=n build regression.
CONFIG_ACPI_BOOT shall be set only if CONFIG_ACPI.
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Delete quirk_via_bridge(), restore quirk_via_irqpic() -- but now
improved to be invoked upon device ENABLE, and now only for VIA devices
-- not all devices behind VIA bridges.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There is a race in the kernel cpuset code, between the code
to handle notify_on_release, and the code to remove a cpuset.
The notify_on_release code can end up trying to access a
cpuset that has been removed. In the most common case, this
causes a NULL pointer dereference from the routine cpuset_path.
However all manner of bad things are possible, in theory at least.
The existing code decrements the cpuset use count, and if the
count goes to zero, processes the notify_on_release request,
if appropriate. However, once the count goes to zero, unless we
are holding the global cpuset_sem semaphore, there is nothing to
stop another task from immediately removing the cpuset entirely,
and recycling its memory.
The obvious fix would be to always hold the cpuset_sem
semaphore while decrementing the use count and dealing with
notify_on_release. However we don't want to force a global
semaphore into the mainline task exit path, as that might create
a scaling problem.
The actual fix is almost as easy - since this is only an issue
for cpusets using notify_on_release, which the top level big
cpusets don't normally need to use, only take the cpuset_sem
for cpusets using notify_on_release.
This code has been run for hours without a hiccup, while running
a cpuset create/destroy stress test that could crash the existing
kernel in seconds. This patch applies to the current -linus
git kernel.
Signed-off-by: Paul Jackson <pj@sgi.com>
Acked-by: Simon Derr <simon.derr@bull.net>
Acked-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The original pwc author raised some questions about the reverse
engineering of the decompressor algorithms used in the pwc driver.
Having done some detailed investigation it appears those concerns that
clean room policy was not followed are reasonable. I've also had a
friendly discussion with Philips to ask their view on this.
This removes the problem items of code which reduces the pwc
functionality in the kernel a little but leaves all the framework for
setup that will be needed for decompressors in user space (where they
eventually belong). This change set is designed to be the minimal risk
change set given that 2.6.12 is hopefully close to hand, with a view to
merging the much updated pwc code in 2.6.13 series kernels.
Someone else can then redo the decompressors properly (clean room) in
user space.
Note that while its easy to say that it should have been caught earlier,
but the violation was really only obvious to someone who had access to
both the proprietary source and the 'GPL' source.
Jens Axboe pointed out that the iounmap() call in libata was occurring
too early, and some drivers (ahci, probably others) were using ioremap'd
memory after it had been unmapped.
The patch should address that problem by way of improving the libata
driver API:
* move ->host_stop() call after all ->port_stop() calls have occurred.
* create default helper function ata_host_stop(), and move iounmap()
call there.
* add ->host_stop_prewalk() hook, use it in sata_qstor.c (hi Mark).
sata_qstor appears to require the host-stop-before-port-stop ordering
that existed prior to applying the attached patch.
We fixed this bug before, but it didn't take. It may have been the case
that the problem was first noticed to occur in a CONFIG_REGPARM compile.
But it's not regparm functions that need not to make tail calls, it's
asmlinkage functions called with a user pt_regs frame on the stack
supplying their arguments. prevent_tail_call probably doesn't do anything
at all in regparm functions (your argument registers are going to be
clobbered, period). It was a braino to conditionalize that definition in
the first place.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A new driver bnx2 for Broadcom bcm5706 is available.
The patch also includes new 1000BASE-X advertisement bit definitions in
mii.h
Thanks to David Miller and Jeff Garzik for reviewing and their valuable
feedback.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[XFRM] Call dst_check() with appropriate cookie
This fixes infinite loop issue with IPv6 tunnel mode.
Signed-off-by: Kazunori Miyazawa <kazunori@miyazawa.org>
Signed-off-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Correcting the list traversal makes the problem go away.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Here is a fixed up version of the reorder feature of netem.
It is the same as the earlier patch plus with the bugfix from Julio merged in.
Has expected backwards compatibility behaviour.
Go ahead and merge this one, the TCP strangeness I was seeing was due
to the reordering bug, and previous version of TSO patch.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netem works better if there if packets are just queued in the inner discipline
rather than having a separate delayed queue. Change to use the dequeue/requeue
to peek like TBF does.
By doing this potential qlen problems with the old method are avoided. The problems
happened when the netem_run that moved packets from the inner discipline to the nested
discipline failed (because inner queue was full). This happened in dequeue, so the
effective qlen of the netem would be decreased (because of the drop), but there was
no way to keep the outer qdisc (caller of netem dequeue) in sync.
The problem window is still there since this patch doesn't address the issue of
requeue failing in netem_dequeue, but that shouldn't happen since the sequence dequeue/requeue
should always work. Long term correct fix is to implement qdisc->peek in all the qdisc's
to allow for this (needed by several other qdisc's as well).
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Handle duplication of packets in netem by re-inserting at top of qdisc tree.
This avoid problems with qlen accounting with nested qdisc. This recursion
requires no additional locking but will potentially increase stack depth.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In IA64 kernel, sys_mmap calls do_mmap2 and do_mmap2 returns addr if
len=0, which means the mmap sys call succeeds.
Posix.1 says:
The mmap() function shall fail if:
[EINVAL] The value of len is zero.
Here is a patch to fix it.
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Acked-by: David Mosberger <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
From: Marcello Maggioni <hayarms@gmail.com>
Problem: Some drives (NEC 3500, TDK 1616N, Mad-dog MD-16XDVD9, RICOH
MP5163DA, Memorex DVD9 drive and IO-DATA's too for sure), if a
CD/DVD is inserted into the tray when the system is booted and if
before the OS bootup the BIOS checked for the presence of a bootable
CD/DVD into the drive, during the IDE probe phase the drive may
result busy and remain so for the next 25/30 seconds . This cause the
drive to be skipped during the booting phase and not begin usable
until the next reboot (if the reboot goes well and the drive doesn't
timeout again).
Solution: Rising the timeout time from 10 seconds to 35 seconds
(during these 35 seconds every drive should wake up for sure
according to the tests I've done).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
From: Stuart Hayes <Stuart_Hayes@dell.com>
The system can panic with a null pointer dereference using ide-scsi if
PIO is being done on scatter gather pages that are in high memory,
because page_address() returns 0. We are actually seeing this using a
tape drive. This patch will kmap_atomic() the pages before performing
PIO.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
* add ide_bus_match() and export ide_bus_type
* split ide_remove_driver_from_hwgroup() out of ide_unregister()
* move device cleanup from ide_unregister() to drive_release_dev()
* convert ide_driver_t->name to driver->name
* convert ide_driver_t->{attach,cleanup} to driver->{probe,remove}
* remove ide_driver_t->busy as ide_bus_type->subsys.rwsem
protects against concurrent ->{probe,remove} calls
* make ide_{un}register_driver() void as it cannot fail now
* use driver_{un}register() directly, remove ide_{un}register_driver()
* use device_register() instead of ata_attach(), remove ata_attach()
* add proc_print_driver() and ide_drivers_show(), remove ide_drivers_op
* fix ide_replace_subdriver() and move it to ide-proc.c
* remove ide_driver_t->drives, ide_drives and drives_lock
* remove ide_driver_t->drivers, drivers and drivers_lock
* remove ide_drive_t->driver and DRIVER() macro
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
When testing ATAPI PIO data transfer on the ppc64 platform, __atapi_pio_bytes() got zero when
sg_dma_len() is used. I checked the <asm-ppc64/scatterlish.h>, the struct scatterlist is defined as:
struct scatterlist {
struct page *page;
unsigned int offset;
unsigned int length;
/* For TCE support */
u32 dma_address;
u32 dma_length;
};
#define sg_dma_address(sg) ((sg)->dma_address)
#define sg_dma_len(sg) ((sg)->dma_length)
So, if the scatterlist is not DMA mapped, sg_dma_len() will return zero on ppc64.
The same problem should occur on the x86-64 platform.
On the i386 platform, sg_dma_len() returns sg->length, that's why the problem does not occur on an i386.
Changes:
- Use sg->length if the scatterlist is not DMA mapped (yet).
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
This patch shows the correct locations of the heat sensors present in iBook
and PowerBooks G4, instead of displaying them as being on CPU and GPU
(which is not always the case).
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch limits therm_adt746x to currently existing fan controllers in
Apple laptops. It may avoid problems with future hardware.
Signed-off-by: Colin Leroy <colin@colino.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Make MTU field in SA PathRecord and MCMemberRecord a u8 rather than an enum
to avoid complications with endianness.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Free all unclaimed MAD receive buffers when userspace closes our file so we
don't leak memory.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Check if a client passes a NULL callback into an SA query, and if so, never
call back. This fixes an oops if someone unloads ib_ipoib and ib_sa in
rapid succession. ib_ipoib does an MCMember delete with a NULL callback
and 0 timeout on unload, which is usually fine since the delete completes
successfully. However, if ib_sa is unloaded immediately afterwards, the
delete will be canceled and ib_sa will try to call the (now already
unloaded) ib_ipoib module back with the cancel completion, which triggers
the oops.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Don't try to access the i2c bus if the register wasn't successful.
Signed-off-by: Gerd Knorr <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This has been sitting for a while, and is causing lots of grief for
people burning CDs. It relaxes the dma restriction for ide-cd,
requiring only the length to be 32-byte aligned, address should be fine
at normal double word alignment.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There's a bigger Speedtouch update coming your way after 2.6.12 but in
the meantime, let's at least make it automatically resync if the DSL
signal is lost.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
For quite a while, there has existed a hypervisor bug on legacy iSeries
which means that we do not get the boot time set in the kernel. This
patch works around that bug. This was most noticable when the root
partition needed to be checked at every boot as the kernel thought it
was some time in 1905 until user mode reset the time correctly.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On PPC64, we keep track of when we need to update jiffies (and the
variables used to calculate the time of day) based on the time base.
If the time base frequence is sufficiently high compared to the
processor clock frequency, then it is possible for the time of day
variables to be corrupted at the time of the first decrementer interrupt
we take. This became obvious on a legacy iSeries where the time base
frequency is the same as the processor clock.
This one line patch fixes the initialisation so that the time of day
variables and the indicator we use to tell when updates are due are
better synchronised.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
try_to_unmap_cluster() does:
for (pte = pte_offset_map(pmd, address);
address < end; pte++, address += PAGE_SIZE) {
...
}
pte_unmap(pte);
It may take a little staring to notice, but pte can actually fall off the
end of the pte page in this iteration, which makes life difficult for
kmap_atomic() and the users not expecting it to BUG(). Of course, we're
somewhat lucky in that arithmetic elsewhere in the function guarantees that
at least one iteration is made, lest this force larger rearrangements to be
made. This issue and patch also apply to non-mm mainline and with trivial
adjustments, at least two related kernels.
Discovered during internal testing at Oracle.
Signed-off-by: William Irwin <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If SIGKILL does not have priority, we cannot instantly kill task before it
makes some unexpected job. It can be critical, but we were unable to
reproduce this easily until Heiko Carstens <Heiko.Carstens@de.ibm.com>
reported this problem on LKML.
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a compile bug by moving a static inline function to the
right place. The body of a static inline function has to be declared
before the use of this function.
Signed-off-by: Dominik Hackl <dominik@hackl.dhs.org>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use LIST_HEAD_INIT rather than doing it by hand in DEFINE_WAIT.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The 'if' clause for ULI526X in tulip_mdio_write allows for
spin_unlock_irqrestore to be called twice for tp->mii_lock. I believe
this is caused by the unintentional omission of a return at the end
of that clause. This patch adds that return.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
As a result of the split of the kobject-registration and the
corresponding hotplug event, the order of events for device_add() has
changed. This restores the old order, cause it confused some userspace
applications.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Older UltraSPARC-III chips have a P-Cache bug that makes us disable it
by default at boot time.
However, this does hurt performance substantially, particularly with
memcpy(), and the bug is _incredibly_ obscure. I have never seen it
triggered in practice, ever.
So provide a "-P" boot option that forces the P-Cache on. It taints
the kernel, so if it does trigger and cause some data corruption or
OOPS, we will find out in the logs that this option was on when it
happened.
Signed-off-by: David S. Miller <davem@davemloft.net>
Everybody does
struct packet_type foo_packet_type = {
.type = __constant_htons(ETH_P_FOO);
};
5 introduced warnings will be properly fixed later.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add 0x1601 as 5752M, it's a 5752 but for mobile PCs.
Stolen from Broadcom bcm5700-8.1.55 driver.
Someone forgot to add it to tg3 ;-)
Signed-off-by: David S. Miller <davem@davemloft.net>
The netlink gfp_any() problem made me double-check the uses of in_softirq()
in crypto/*. It seems to me that we should be checking in_atomic() instead
of in_softirq() in crypto_yield. Otherwise people calling the crypto ops
with spin locks held or preemption disabled will get burnt, right?
Signed-off-by: David S. Miller <davem@davemloft.net>
When we are doing ucopy, we try to defer the ACK generation to
cleanup_rbuf(). This works most of the time very well, but if the
ucopy prequeue is large, this ACKing behavior kills performance.
With TSO, it is possible to fill the prequeue so large that by the
time the ACK is sent and gets back to the sender, most of the window
has emptied of data and performance suffers significantly.
This behavior does help in some cases, so we should think about
re-enabling this trick in the future, using some kind of limit in
order to avoid the bug case.
Signed-off-by: David S. Miller <davem@davemloft.net>
The hardware sync of the timebase on SMP G5s uses a black magic
incantation to the i2c clock chip that was inspired from what Darwin
does.
However, this was an earlier version of Darwin that was ... buggy !
heh. This causes the latest models to break though when starting SMP,
so it's worth fixing.
Here's a new version of the incantation based on careful transcription
of the said incantations as found in the latest version of apple's
temple.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There is an off-by-one error in the IPIC code that configures the
external interrupts (Edge or Level Sensitive).
Signed-off-by: Randy Vinson <rvinson@mvista.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The latest speedbumped Apple G5 models have a "bug" in the Open Firmware
device tree that lacks the proper interrupt routing information for the
northbridge i2c controller. Apple's driver silently falls back into a
sub-optimal "polled" mode (heh, maybe they didn't even notice the bug
because of that :), our driver didn't properly check and crashes :(
This patch fixes our driver to not crash, and adds code to the
prom_init() OF trampoline code that detects the "bug" and adds the
missing information back for this chipset revision. This fixes booting
and thermal control on these models.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I came across the following problem while running ltp-aiodio testcases from
ltp-full-20050405 on linux-2.6.12-rc3-mm3. I tried running the tests with
EXT3 as well as JFS filesystems.
One or two fsx-linux testcases were hung after some time. These testcases
were hanging at wait_for_all_aios().
Debugging shows that there were some iocbs which were not getting completed
eventhough the last retry for those returned -EIOCBQUEUED. Also all such
pending iocbs represented READ operation.
Further debugging revealed that all such iocbs hit EOF in the DIO layer.
To be more precise, the "pos" from which they were trying to read was
greater than the "size" of the file. So the generic_file_direct_IO
returned 0.
This happens rarely as there is already a check in
__generic_file_aio_read(), for whether "pos" < "size" before calling direct
IO routine.
>size = i_size_read(inode);
>if (pos < size) {
> retval = generic_file_direct_IO(READ, iocb,
> iov, pos, nr_segs);
But for READ, we are taking the inode->i_sem only in the DIO layer. So it
is possible that some other process can change the size of the file before
we take the i_sem. In such a case ( when "pos" > "size"), the
__generic_file_aio_read() would return -EIOCBQUEUED even though there were
no I/O requests submitted by the DIO layer. This would cause the AIO layer
to expect aio_complete() for THE iocb, which doesnot happen. And thus the
test hangs forever, waiting for an I/O completion, where there are no
requests submitted at all.
The following patch makes __generic_file_aio_read() return 0 (instead of
returning -EIOCBQUEUED), on getting 0 from generic_file_direct_IO(), so
that the AIO layer does the aio_complete().
Testing:
I have tested the patch on a SMP machine(with 2 Pentium 4 (HT)) running
linux-2.6.12-rc3-mm3. I ran the ltp-aiodio testcases and none of the
fsx-linux tests hung. Also the aio-stress tests ran without any problem.
Signed-off-by: Suzuki K P <suzuki@in.ibm.com>
Signed-off-by: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a bug introduced by Al Viro's patch: [patch 136/174]
reiserfs endianness: clone struct reiserfs_key
The problem is MAX_KEY and MAX_IN_CORE_KEY defined in this patch do not
look equal from reiserfs comp_key's point of view. This caused reiserfs'
sanity check to complain.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In _spin_unlock_bh(lock):
do { \
_raw_spin_unlock(lock); \
preempt_enable(); \
local_bh_enable(); \
__release(lock); \
} while (0)
there is no reason for using preempt_enable() instead of a simple
preempt_enable_no_resched()
Since we know bottom halves are disabled, preempt_schedule() will always
return at once (preempt_count!=0), and hence preempt_check_resched() is
useless here...
This fixes it by using "preempt_enable_no_resched()" instead of the
"preempt_enable()", and thus avoids the useless preempt_check_resched()
just before re-enabling bottom halves.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
with high-speed mode enabled, we switch it to high-speed mode so that
baud_base becomes 921600. However, we also need to multiply the baud
divisor by 8 at the same time, in case it's already in use as a console.
Signed-off-by: David Woodhouse
Acked-by: Tom Rini
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Defines for the different command classes as defined in the MMC and SD
specifications.
Removes the check for high command classes and instead checks that the
command classes needed are present.
Previous solution killed forward compatibility at no apparent gain.
Signed-of-by: Pierre Ossman
This works around the too fast timer seen on some ATI boards.
I don't feel confident enough about it yet to enable it by default, but give
users the option.
Patch and debugging from Christopher Allen Wing <wingc@engin.umich.edu>, with
minor tweaks (renamed the option and documented it)
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The test case at
http://cvs.sourceforge.net/viewcvs.py/posixtest/posixtestsuite/conforman
ce/interfaces/clock_nanosleep/1-5.c fails if it runs as a 32bit process on
x86_86 machines.
The root cause is the sub 32bit process fails to restart the syscall after it
is interrupted by a signal.
The syscall number of sys_restart_syscall in table sys_call_table is
__NR_restart_syscall (219) while it's __NR_ia32_restart_syscall
(0) in ia32_sys_call_table. When regs->rax==(unsigned
long)-ERESTART_RESTARTBLOCK, function do_signal doesn't distinguish if
the process is 64bit or 32bit, and always sets restart syscall number
as __NR_restart_syscall (219).
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We need to hold the vmlist_lock while doing change_page_attr, otherwise we
could reset someone else's mapping.
Requires previous patch to add __remove_vm_area
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Caused oopses again. Also fix potential mismatch in checking if
change_page_attr was needed.
To do it without races I needed to change mm/vmalloc.c to export a
__remove_vm_area that does not take vmlist lock.
Noticed by Terence Ripperda and based on a patch of his.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There was a "off by one quad word" error in there. I don't think it is
exploitable because it will only store into a unused area, but better to plug
it.
Found and fixed by John Blackwood
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Remove duplicated ifdef
- Make core_id match what Intel uses
- Initialize phys_proc_id correctly for non DC case
- Handle non power of two core numbers.
Fixes for both i386 and x86-64
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes the entwining of cpusets and hotplug code in the "No
more Mr. Nice Guy" case of sched.c move_task_off_dead_cpu().
Since the hotplug code is holding a spinlock at this point, we cannot take
the cpuset semaphore, cpuset_sem, as would seem to be required either to
update the tasks cpuset, or to scan up the nested cpuset chain, looking for
the nearest cpuset ancestor that still has some CPUs that are online. So
we just punt and blast the tasks cpus_allowed with all bits allowed.
This reverts these lines of code to what they were before the cpuset patch.
And it updates the cpuset Doc file, to match.
The one known alternative to this that seems to work came from Dinakar
Guniguntala, and required the hotplug code to take the cpuset_sem semaphore
much earlier in its processing. So far as we know, the increased locking
entanglement between cpusets and hot plug of this alternative approach is
not worth doing in this case.
Signed-off-by: Paul Jackson <pj@sgi.com>
Acked-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Dinakar Guniguntala <dino@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixed CONFIG_TASK_SIZE handling on 44x. Currently head_44x.S
hardcodes 0x80000000, which breaks if user chooses to change TASK_SIZE
(e.g. for 3G user-space). Tested on Ocotea in 3G/1G configuration.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Initialization of 8250 serial ports that are platform devices require that
at empty entry exists in the array of plat_serial8250_port. With out an
empty entry we can get some pretty random behavior.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Byte-swapping of the port and IP address passed in to the multicast driver by
the user used to happen in different places, which was a bug in itself. The
port also was swapped before being printk-ed, which led to a misleading
message. This patch moves the port swapping to the same place as the IP
address swapping. It also cleans up the error paths of mcast_open.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some changes that I sent in didn't make 2.6.12-rc4 for some reason. This
adds them back. We have
an x86_64 definition of TOP_ADDR
a reimplementation of the x86_64 csum_partial_copy_from_user
some syntax fixes in arch/um/kernel/ptrace.c
removal of a CFLAGS definition in the x86_64 Makefile
some include changes in the x86_64 ptrace.c and user-offsets.h
a syntax fix in elf-x86_64.h
Also moved an include in the i386 and x86_64 Makefiles to make the symlinks
work, and some small fixes from Al Viro.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If you tried to open a packet device first in read-only mode and then a
second time in read-write mode, the second open succeeded even though the
device was not correctly set up for writing. If you then tried to write
data to the device, the writes would fail with I/O errors.
This patch prevents that problem by making the second open fail with
-EBUSY.
Signed-off-by: Peter Osterlund <petero2@telia.com>
Cc: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The new period/dt setting routines don't get the coupling of these
parameters correct. This means that Domain Validation never gets DT
set, and thus the drive gets restricted to U80.
Fix this by restoring the couplings in the set routines.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Tampering with the settings has to be done under the host lock ...
slave_alloc isn't called under any lock, so this has to be done
explicitly.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The allocation of all of our components should be done in slave alloc.
Currently it's rather fancifully refcounted in the queuecommand
callback. This patch moves allocation and destroy to their correct
places in slave_alloc/slave_destory. Now we can guarantee that
everywhere a device is requested, it's actually been allocated, so don't
check for this anymore.
Additionally, the per device busy timer was the only source of potential
use after free. It's been deleted because Linux does the correct thing
with busy returns, so there's no need to implement a separate timer in
the driver.
Finally, implement code that forces all the device parameters to zero
(i.e. async and narrow) in the slave alloc, inform the spi class of the
bios recorded maximums and wait until slave configure before trying
anything more adventurous.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This should finish the spurious queue removal from aic7xxx (there are
other queues that are probably unnecessary, but at least the major and
obviously unnecessary ones are done with).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This was rendered obsolete by the busyq removal; remove some of the last
remnants of its presence.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
pci_alloc_consistent is under 4G by default. Also simplify the
definition of bus_dmamap_t.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
There's not much sense in sharing code anymore now that aic7xxx uses
various transport class facilities.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The aic7xxx driver has two spurious queues in it's linux glue code: the
busyq which queues incoming commands to the driver and the completeq
which queues finished commands before sending them back to the mid-layer
This patch just removes the busyq and makes the aic finally return the
correct status to get the mid-layer to manage its queueing, so a command
is either committed to the sequencer or returned to the midlayer for
requeue.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This is similar to the previous sym2 problem. For Domain Validation to
work we can't allow any period setting to turn wide on if it was
previously off.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
There's a basic need not to have parameters go under or over certain
values when doing domain validation. The basic ones are
max_offset, max_width and min_period
This patch makes the transport class take and enforce these three
limits. Currently they can be set by the user, although they could
obviously be read from the HBA's on-board NVRAM area during
slave_configure (if it has one).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The recent change to add a timeout to strbuf flushing had
a negative performance impact. The udelay()'s are too long,
and they were done in the wrong order wrt. the register read
checks. Fix both, and things are happy again.
There are more possible improvements in this area. In fact,
PCI streaming buffer flushing seems to be part of the bottleneck
in network receive performance on my SunBlade1000 box.
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for sysfs to the IPMI device interface.
Clean-ups based on Dimitry Torokovs comment by Philipp Hahn.
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Philipp Hahn <pmhahn@titan.lahn.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes an uninitialized variable warning in arch/ppc/kernel/setup.c,
and this time gcc is actually right, there is a path that could result
in offset being uninitialized. Zero is a sane default in this instance.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Recently the __copy_tofrom_user routine was modified to avoid doing
prefetches past the end of the source array. However, in doing so we
introduced a bug in that it now returns the wrong value for the number
of bytes not copied when a fault is encountered. This fixes it to
return the correct number.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We are computing phys in the code below and never using. This patch
takes out the redundant computation.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On ppc32, the platform code can supply a "progress" function that is
used to show progress through the boot. These functions are usually
in an init section and so can't be called after the init pages are
freed. Now that the cpu bringup code can be called after the system
is booted (for hotplug cpu) we can get the situation where the
progress function can be called after boot. The simple fix is to set
the progress function pointer to NULL when the init pages are freed,
and that is what this patch does (note that all callers already check
whether the function pointer is NULL before trying to call it).
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
As noted by Chris Wright, we need to do the full range of tests regardless
of whether MAP_FIXED is set or not, so re-organize get_unmapped_area()
slightly to do the sanity checks unconditionally.
In netlink_broadcast() we're sending shared skb's to netlink listeners
when possible (saves some copying). This is OK, since we hold the only
other reference to the skb.
However, this implies that we must drop our reference on the skb, before
allowing a receiving socket to disappear. Otherwise, the socket buffer
accounting is disrupted.
Signed-off-by: Tommy S. Christensen <tommy.christensen@tpack.net>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This bug causes:
assertion (!atomic_read(&sk->sk_rmem_alloc)) failed at net/netlink/af_netlink.c (122)
What's happening is that:
1) The skb is sent to socket 1.
2) Someone does a recvmsg on socket 1 and drops the ref on the skb.
Note that the rmalloc is not returned at this point since the
skb is still referenced.
3) The same skb is now sent to socket 2.
This version of the fix resurrects the skb_orphan call that was moved
out, last time we had 'shared-skb troubles'. It is practically a no-op
in the common case, but still prevents the possible race with recvmsg.
Signed-off-by: Tommy S. Christensen <tommy.christensen@tpack.net>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
We need to verify that the payload contains enough data so that
attach_one_algo can copy alg_key_len bits from the payload.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
The variable alg_key_len is in bits and not bytes. The function
attach_one_algo is currently using it as if it were in bytes.
This causes it to read memory which may not be there.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Remove extra __ip_vs_conn_put for incoming ICMP in direct routing
mode. Mark de Vries reports that IPVS connections are not leaked anymore.
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
currently it opencodes it, but that's in the way of chaning the
lookup_hash interface.
I'd prefer to disallow modular af_unix over exporting lookup_create,
but I'll leave that to you.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Prevent the topdown allocator from allocating mmap areas all the way
down to address zero.
We still allow a MAP_FIXED mapping of page 0 (needed for various things,
ranging from Wine and DOSEMU to people who want to allow speculative
loads off a NULL pointer).
Tested by Chris Wright.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Having frag_list members which holds wmem of an sk leads to nightmares
with partially cloned frag skb's. The reason is that once you unleash
a skb with a frag_list that has individual sk ownerships into the stack
you can never undo those ownerships safely as they may have been cloned
by things like netfilter. Since we have to undo them in order to make
skb_linearize happy this approach leads to a dead-end.
So let's go the other way and make this an invariant:
For any skb on a frag_list, skb->sk must be NULL.
That is, the socket ownership always belongs to the head skb.
It turns out that the implementation is actually pretty simple.
The above invariant is actually violated in the following patch
for a short duration inside ip_fragment. This is OK because the
offending frag_list member is either destroyed at the end of the
slow path without being sent anywhere, or it is detached from
the frag_list before being sent.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
It looks like skb_cow_data() does not set
proper owner for newly created skb.
If we have several fragments for skb and some of them
are shared(?) or cloned (like in async IPsec) there
might be a situation when we require recreating skb and
thus using skb_copy() for it.
Newly created skb has neither a destructor nor a socket
assotiated with it, which must be copied from the old skb.
As far as I can see, current code sets destructor and socket
for the first one skb only and uses truesize of the first skb
only to increment sk_wmem_alloc value.
If above "analysis" is correct then attached patch fixes that.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Extract DMA boundary bit selection into a seperate
function, tg3_calc_dma_bndry(). Call this from
tg3_test_dma().
Make DMA test more reliable by using no DMA boundry
setting during the test. If the test passes, then
use the setting we selected before the test.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Even though we do software interrupt mitigation
via NAPI, it still helps to have some minimal
hw assisted mitigation.
This helps, particularly, on systems where register
I/O overhead is much greater than the CPU horsepower.
For example, it helps on NUMA systems. In such cases
the PIO overhead to disable interrupts for NAPI accounts
for the majority of the packet processing cost. The
CPU is fast enough such that only a single packet is
processed by each NAPI poll call.
Thanks to Michael Chan for reviewing this patch.
Signed-off-by: David S. Miller <davem@davemloft.net>
When supported, use the TAGGED interrupt processing support
the chip provides. In this mode, instead of a "on/off" binary
semaphore, an incrementing tag scheme is used to ACK interrupts.
All MSI supporting chips support TAGGED mode, so the tg3_msi()
interrupt handler uses it unconditionally. This invariant is
verified when MSI support is tested.
Since we can invoke tg3_poll() multiple times per interrupt under
high packet load, we fetch a new copy of the tag value in the
status block right before we actually do the work.
Also, because the tagged status tells the chip exactly which
work we have processed, we can make two optimizations:
1) tg3_restart_ints() need not check tg3_has_work()
2) the tg3_timer() need not poke the chip 10 times per
second to keep from losing interrupt events
Based upon valuable feedback from Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
I applied the penultimate version of the perfmon patch, which didn't have
the initialization of the new spinlock that was added.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch from Charles Spirakis
Some linux customers want to optimize their applications on the latest
hardware but are not yet willing to upgrade to the latest kernel. This
patch provides a way to plug in an alternate, basic, and GPL'ed PMU
subsystem to help with their monitoring needs or for specialty work. It
can also be used in case of serious unexpected bugs in perfmon. Mutual
exclusion between the two subsystems is guaranteed, hence no conflict
can arise from both subsystem being present.
Acked-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Avoid console spam with ext3 aborted journal.
ext3 usually reports error conditions that it detects in its environment.
But when its journal gets aborted due to such errors, it can sometimes
continue to report that condition forever, spamming the console to such
an extent that the initial first cause of the journal abort can be lost.
When the journal aborts, we put the filesystem into readonly mode. Most
subsequent filesystem operations will get rejected immediately by checks
for MS_RDONLY either in the filesystem or in the VFS. But some paths do
not have such checks --- for example, if we continue to write to a file
handle that was opened before the fs went readonly. (We only check for
the ROFS condition when the file is first opened.) In these cases, we
can continue to generate log errors similar to
EXT3-fs error (device $DEV) in start_transaction: Journal has aborted
for each subsequent write.
There is really no point in generating these errors after the initial
error has been fully reported. Specifically, if we're starting a
completely new filesystem operation, and the filesystem is *already*
readonly (ie. the ext3 layer has already detected and handled the
underlying jbd abort), and we see an EROFS error, then there is simply
no point in reporting it again.
Signed-off-by: Stephen Tweedie <sct@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Don't pass meaningless file handles to block device ioctls.
The recent raw IO ioctl-passthrough fix started passing the raw file
handle into the block device ioctl handler. That's unlikely to be
useful, as the file handle is actually open on a character-mode raw
device, not a block device, so dereferencing it is not going to yield
useful results to a block device ioctl handler.
Previously we just passed NULL; also not a value that can usefully
be dereferenced, but at least if it does happen, we'll oops instead of
silently pretending that the file is a block device, so NULL is the more
defensive option here. This patch reverts to that behaviour.
Noticed by Al Viro.
Signed-off-by: Stephen Tweedie <sct@redhat.com>
Acked-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The driver model has a "detach_state" mechanism that:
- Has never been used by any in-kernel drive;
- Is superfluous, since driver remove() methods can do the same thing;
- Became buggy when the suspend() parameter changed semantics and type;
- Could self-deadlock when called from certain suspend contexts;
- Is effectively wasted documentation, object code, and headspace.
This removes that "detach_state" mechanism; net code shrink, as well
as a per-device saving in the driver model and sysfs.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch includes various tweaks in the messaging that appears during
system pm state transitions:
* Warn about certain illegal calls in the device tree, like resuming
child before parent or suspending parent before child. This could
happen easily enough through sysfs, or in some cases when drivers
use device_pm_set_parent().
* Be more consistent about dev_dbg() tracing ... do it for resume() and
shutdown() too, and never if the driver doesn't have that method.
* Say which type of system sleep state is being entered.
Except for the warnings, these only affect debug messaging.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
If my CPCI hotplug update patch is applied, then there are no longer any
in tree users of the pci_visit_dev API, and it and its related code can be
removed.
Signed-off-by: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[PATCH] CPCI: update
I have finally done some work to update the CompactPCI hotplug driver to
fix some of the outstanding issues in 2.6:
- Added adapter and latch status ops so that those files will get created
by the current PCI hotplug core. This used to not be required, but
seems to be now after some of the sysfs rework in the core.
- Replaced slot list spinlock with a r/w semaphore to avoid any potential
issues with sleeping. This quiets all of the runtime warnings.
- Reworked interrupt driven hot extraction handling to remove need for a
polling operator for ENUM# status. There are a lot of boards that only
have an interrupt driven by ENUM#, so this lowers the bar to entry.
- Replaced pci_visit_dev usage with better use of the PCI core functions.
The new code is functionally equivalent to the previous code, but the
use of pci_enable_device on insert needs to be investigated further, as
I need to do some more testing to see if it is still necessary.
Signed-off-by: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Here is the updated patch to get pciehp driver to work for downstream
port of a switch and handle the difference in the offset value of PCI
Express capability list item of different ports.
Signed-off-by: Dely Sy <dely.l.sy@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Here is a patch to fix the problem of echoing 1 to "power" file
to enabled slot causing the slot to power down, and echoing 0
to disabled slot causing shpchp_disabled_slot() to be called
twice. This problem was reported by kenji Kaneshige.
Thanks,
Dely
Signed-off-by: Dely Sy <dely.l.sy@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The 2.6 kernel has CPE error thresholding.
This patch lets SAL know of this error handling feature.
The changes are SN specific.
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
Change the SAL call for POD mode to be reentrant.
This change is SN specific.
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
acpi_request_vector() is called in ia64_mca_init() to get the cpe_vector.
The problem is that acpi_request_vector() looks in platform_intr_list[] to
get the vector, but platform_intr_list[] is not initialized with a valid
vector until later (in sn_setup()). Without a valid vector the code
defaults to polling mode.
This patch moves the call to acpi_request_vector() from ia64_mca_init()
to ia64_mca_late_init(), which is after platform_intr_list[] is initialized.
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
Now that I'm no longer at SGI and don't have access to Altix equipment,
it's time to pass on the job of patch monkey to someone else. Greg
Edwards has foolishly^Wkindly volunteered for the job, so here's a
patch to update the MAINTAINERS file with the appropriate information.
Signed-off-by: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
convert_to_non_syscall() has the same problem that unwind_to_user()
used to have. Fix it likewise.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The GET_INDEX() macro should use just the low three bits of the devfn,
otherwise we have a memory scribble in pcie_rootport_aspm_quirk that
overwrites ptype_all
Fix it to be more careful about its arguments while at it.
Acked by Dely Sy <dely.l.sy@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We need to call parse_early_param() early on to allow usage of
early_param() for command line parsing.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- remove enable_ci, ci interface is assumed to be present if the saa7113
is not found.
- reduce the delay when checking for saa7113
- clean up the cam reset according to specifications
- turn off Vcc to the cam slot if cam is removed or fails reset
- remove cam reset in ciintf_init
- clean up printks (KERN_)
- move gpio setting into saa7113_init
- clean up unreadable frontend_init
(Kenneth Aafloy)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fix a bug in the module parameter (Dominique Dumont)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fix for descrambling failure (Dominique Dumont, Manu Abraham)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fixed a tuning problem for cards based on the old firmware (Steffen Motzer,
Manu Abraham)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
add support for the old Twinhan 200103A card (Steffen Motzer)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- reorganize Twinhan DST driver to support CI
- add support for more cards
(Manu Abraham)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Modified dvb_register_adapter() to avoid kmalloc/kfree. Drivers have to embed
struct dvb_adapter into their private data struct from now on. (Andreas
Oberritter)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
misc. minor cleanups, select FW_LOADER and add a help text to DVB_OR51132
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- make needlessly global code static
- #if 0 the following unused global functions:
- ttpci/av7110_hw.c: av7110_reset_arm
- ttpci/av7110_hw.c: av7110_send_ci_cmd
- frontends/mt352.[ch]: drop mt352_read
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
added support for different tda10046 firmware versions. tested with v20, v21
and v25. (Andreas Oberritter)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
allow N_I2C to be overridden by the card driver (Andreas Oberritter)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
use simple u8 instead of bitfields (Andreas Oberritter)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
copying the mt352_config-struct to mt352_state instead of storing just the
pointer to it (Patrick Boettcher)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fix the current stv0299 code that handles FE_DISHNETWORK_SEND_LEGACY_CMD.
(supports the legacy SW21, SW44, and SW64 switches)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
add support for read_ber, read_signal_strength and read_status (Greg Wickham)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fix NTSC -> PAL switching (std->id is a bitmap!) (Oliver Endriss)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Support KNC-1 Plus DVB-T and similar KNC-1 cards (Alexander Riedel)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Switch analog output of the Crystal sound chip to left/stereo/right mode.
This will fix problems with some (most?) channels which do not encode
2-channel audio correctly. (Oliver Endriss)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove incorrect "dvb_"-prefix from parameter description. Error detected
with section2text.rb, see autoparam patch.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
no need to initialize static/global variables to 0
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Support for TT/Hauppauge Nexus-S Rev 2.3 (Oliver Endriss)
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fixed DiSeqC switching, which was wrongly taking over from skystar2.c. Thanks
to Joerg Riechardt for finding the bug and testing the Fix.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
rewrote the i2c-reading-part (no more ack-error ignoring, which was inherited
from the skystar2-driver)
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Corrected the THIS_MODULE handling for the flexcop-stuff and dvb-usb which
lead to oopses because of misorganized module dependencies.
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- enabled the HW PID by default for the PCI cards
- correct the TS demux parsing when PID filter is enabled (and thus the
timer IRQ)
- rewrote the PID-filter and FULLTS control part in flexcop-hw-filter
(thanks to Krzysztof Matula for pointing that out)
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fixed interrupt-sharing and added a spinlock to the irq-callback
(thanks to Pascal Riekenberg)
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
read MAC address directly into dvb_adapter->proposed_mac
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- driver receives many null TS packets (pid=0x1fff). They occupy the
limited USB bandwidth and this leads to loss of video packets. Enabling the
null packet filter fixes this.
- packets that flexcop sends to USB have a 2 byte header that has to be
removed.
- sometimes a TS packet is split between different urbs. These parts have
to be combined in a temporary buffer.
Signed-off-by: Vadim Catana <skystar@moldova.cc>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
b2c2/flexcop driver refactoring to support PCI and USB based cards part 2: add
modular Flexcop driver
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
b2c2/flexcop driver refactoring to support PCI and USB based cards, part 1:
drop abandoned attempt to support USB devices
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Set the initial sendtime to be 10 seconds in the future, to avoid the packet
timing out while it's still queued to be sent. This fixes furthur "no tlabel
match" problems caused by premature expiry.
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix cross_bound to not return 1 for zero-length regions. Fixes regression
when sending null ISO packets.
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Apply and fixup patch from Markus Tavenrath <speedygoo@speedygoo.de> for
video1394 to allow only a single buffer on receive and two buffers on
transmit. Tested with libdc1394 and dvconnect (libdv).
Signed-off-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes redundant NULL pointer checks before kfree() in all of
drivers/ieee1394/
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch contains the following possible cleanups:
- #if 0 the following unused global functions:
- hpsb_lock
- hpsb_send_gasp
- ieee1394_transactions.h: remove the stale hpsb_lock64 prototype
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The options CONFIG_IEEE1394_PCILYNX_LOCALRAM and CONFIG_IEEE1394_PCILYNX_PORTS
are not available for some time.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
profile=schedule parsing is not quite what it should be. First, str[7] is
'e', not ',', but then even if it did fall through, prof_on =
SCHED_PROFILING would be clobbered inside if (get_option(...)) So a small
amount of rearrangement is done in this patch to correct it.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
These days <linux/ioctl32.h> handles everything, no need for an asm
header on just two architectures.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
register_chrdev() can return errors (negative) other then -EBUSY, so check
for any negative error code.
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use helper functions to convert between timeval structure and jiffies
rather than custom logic.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Acked-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch should fix the avc_alloc_node() oom condition that Andrew
reported when no policy is loaded in SELinux.
Prior to this patch, when no policy was loaded, the SELinux "security
server" (policy engine) was only returning allowed decisions for the
requested permissions for each access check. This caused the cache to
thrash when trying to use SELinux for real work with no policy loaded
(typically, the no policy loaded state is only for bootstrapping to the
point where we can load an initial policy).
This patch changes the SELinux security server to return the complete
allowed access vector at once, and then to reset the cache after the
initial policy load to flush the initial cache state created during
bootstrapping.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There is a bug in do_swap_page(): when swap page happens to be unreadable,
page filled with random data is mapped into user address space. The fix is
to check for PageUptodate and send SIGBUS in case of error.
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-Off-By: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If block_read_full_page() detects an error when running get_block() it will
run SetPageError(), then it will zero out the block in pagecache and will mark
the buffer_head uptodate.
So at the end of readahead we end up with a non-uptodate pagecache page which
is marked PageError. But it has uptodate buffers.
The pagefault code will run ClearPageError, will launch readpage a second time
and block_read_full_page() will notice the uptodate buffers and will mark the
page uptodate as well. We end up with an uptodate, !PageError page full of
zeros and the error is lost.
(It seems a little odd that filemap_nopage() runs ClearPageError(). I guess
all of this adds up to meaning that for each attempted access to the page, the
pagefault handler will retry the I/O. Which is good and bad. If the app is
ignoring SIGBUS for some reason we could get a lot of back-to-back I/O
errors.)
Fix it by not marking the pagecache buffer_head as uptodate if the attempt to
map that buffer to a disk block failed.
Credit-to: Qu Fuping <fs@ercist.iscas.ac.cn>
For reporting the bug and identifying its source.
Signed-off-by: Qu Fuping <fs@ercist.iscas.ac.cn>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Move add_preferred_console out of CONFIG_PRINTK so serial console does the
right thing.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The arch Makefile may override the include path order, which is used by Xen
(and UML?) to make sure include/asm-xen is searched before
include/asm-i386.
The Makefile change to 2.6.12-rc4 made the top Makefile always override the
value specified by the arch Makefile. This trivial patch makes the Xen
kernel compile again.
Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Solve a dependency-problem related to the SAA7130/7134 TV-card driver. The
driver won't compile with CRC32 disabled, so I added it to the select list.
Signed-off-by: Dominik Hackl <dominik@hackl.dhs.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
serial_cs's vendor/device identification got broken by Yum Rayan's change
'[PATCH] serial_cs: Reduce stack usage in serial_event()' - it changed buf
type from u_short* to char*, breaking device manufacturer & card number
retrieval. Due to this my modem stopped from being recognized as special
case.
Code will work much better if we'll rely on first_tuple's parser instead of
doing parse ourselves. Code also looks simpler after change.
Signed-off-by: Petr Vandrovec <vandrove@vc.cvut.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On my IA64 machine, after kernel 2.6.12-rc3 boots, an edge-triggered
interrupt (IRQ 46) keeps triggered over and over again. There is no IRQ 46
interrupt action handler. It has lots of impact on performance.
Kernel 2.6.10 and its prior versions have no the problem. Basically,
kernel 2.6.10 will mask the spurious edge interrupt if the interrupt is
triggered for the second time and its status includes
IRQ_DISABLE|IRQ_PENDING.
Originally, IA64 kernel has its own specific _irq_desc definitions in file
arch/ia64/kernel/irq.c. The definition initiates _irq_desc[irq].status to
IRQ_DISABLE. Since kernel 2.6.11, it was moved to architecture independent
codes, i.e. kernel/irq/handle.c, but kernel/irq/handle.c initiates
_irq_desc[irq].status to 0 instead of IRQ_DISABLE.
Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I found a bug in the packet writing driver that could cause data
corruption. The problem arised if the driver got a write request for a
sector in a "zone" it was already working on. In that case it was supposed
to queue the write request until it was done processing earlier requests
for the same zone, and instead work on some other zone in the mean time.
However, if there was no other zone to work on, the driver would initiate
two packet_data objects for the same zone, causing unpredictable things to
happen.
Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix OOPS when swapping on a device that doesn't have an unplug_io_fn defined
(eg, ATA Over Ethernet)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
dasd driver changes:
- The feature check in dasd_generic_online returns an error if
the devmap entry for the device is not yet available. Check
for the feature after the device has been created.
- Do symmetric registration/deregistration of cdev->handler.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes two possible off by one errors found by the Coverity
checker (look at the period[i] and delay[j] in the two first unchanged
lines).
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Linus changed the second argument of __vmalloc from int to unsigned int
breaking the compilation for CONFIG_MMU=n configurations (since he only
changed vmalloc.c but not nommu.c).
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes the assumption that LAPIC entries contain the BSP as its
first entry. This is a slight improvement to the temporary fix submitted by
Suresh Siddha.
- Removes assumption that LAPIC entries contain BSP first.
- Builds x86_acpiid_to_apicid[] and bios_cpu_apicid[] properly with BSP as
first entry.
- Made maxcpus=1 boot on these systems. Since the parsing earlier in
arch/x86_64/kernel/mpparse.c stopped after maxcpus entries, other entries
were not processed, this causes kernel not to boot on these systems.
TBD: x86_acpiid_to_apicid and bios_cpu_apicid[] seem to be exactly the
same. This could be removed, but might need more work to cleanup.
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Collected NMI watchdog fixes.
- Fix call of check_nmi_watchdog
- Remove earlier move of check_nmi_watchdog to later. It does not fix the
race it was supposed to fix fully.
- Remove unused P6 definitions
- Add support for performance counter based watchdog on P4 systems.
This allows to run it only once per second, which saves some CPU time.
Previously it would run at 1000Hz, which was too much.
Code ported from i386
Make this the default on Intel systems.
- Use check_nmi_watchdog with local APIC based nmi
- Fix race in touch_nmi_watchdog
- Fix bug that caused incorrect performance counters to be programmed in a
few cases on K8.
- Remove useless check for local APIC
- Use local_t and per_cpu variables for per CPU data.
- Keep other CPUs busy during check_nmi_watchdog to make sure they really
tick when in lapic mode.
- Only check CPUs that are actually online.
- Various other fixes.
- Fix fallback path when MSRs are unimplemented
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Originally from Matt Tolentino
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use bitmap_zero instead of bitmap_empty to initialise cpu mask This makes it
actually run reliable instead of relying on stack state.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The PTEs can point to ioremap mappings too, and these are often outside
mem_map. The NUMA hash page lookup functions cannot handle out of bounds
accesses properly.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Allowed user programs to set a non canonical segment base, which would cause
oopses in the kernel later.
Credit-to: Alexander Nyberg <alexn@dsv.su.se>
For identifying and reporting this bug.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This works around an AMD Erratum.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There are unfortunately more and more multi processor Opteron systems which
don't have HPET timer support in the southbridge. This covers in particular
Nvidia and VIA chipsets. They also don't guarantee that the TSCs are
synchronized between CPUs; and especially with MP powernow the systems are
nearly unusable because the time gets very inconsistent between CPUs.
The timer code for x86-64 was originally written under the assumption that we
could fall back to the HPET timer on such systems. But this doesn't work
there.
Another alternative is to use the ACPI PM timer as primary time source. This
patch does that. The kernel only uses PM timer when there is no other choice
because it has some disadvantages.
Ported over from i386. It should be faster than the i386 version because I
dropped the "read three times" workaround, but is still considerable slower
than HPET and also does not work together with vsyscalls which have to be
disabled.
Cc: <mark.langsdorf@amd.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It is unnecessary on modern Intel or AMD systems, and that is all we support
on x86-64
Also causes problems on various systems
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It is not very useful to the user and more an kernel internal implementation
detail. So hide it.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The new TSC sync algorithm recently submitted did not work too well.
The result was that some MP machines where the TSC came up of the BIOS very
unsynchronized and that did not have HPET support were nearly unusable because
the time would jump forwards and backwards between CPUs.
After a lot of research ;-) and some more prototypes I ended up with just
using the one from IA64 which looks best. It has some internal self tuning
that should adapt to changing interconnect latencies. It holds up in my tests
so far.
I believe it was originally written by David Mosberger, I just ported it over
to x86-64. See the inline comment for a description.
This cleans up the code because it uses smp_call_function for syncing instead
of having custom hooks in SMP bootup.
Please note that the cycle numbers it outputs are too optimistic because they
do not take into account the latency of WRMSR and RDTSC, which can be hundreds
of cycles. It seems to be able to sync a dual Opteron to 200-300 cycles,
which is probably good enough.
There is a timing window during AP bootup where interrupts can see
inconsistent time before the TSC is synced. It is hard to avoid unfortunately
because we can only do the TSC sync after some setup, and we need to enable
interrupts before that. I just ignored it for now.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It could be in a memory hole not mapped in mem_map and that causes the hash
lookup to go off to nirvana.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Needed by big systems and only costs a few K of memory.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Last round hopefully of cpu_core_id changes hopefully fow now:
- Always initialize cpu_core_id for all CPUs, even when no dual core setup
is detected. This prevents funny /proc/cpuinfo output
- Do the same with phys_proc_id[] even when no HyperThreading - dito.
- Use the CPU APIC-ID from CPUID 1 instead of the linux virtual CPU number
to identify the core for AMD dual core setups.
Patch for i386/x86-64.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This works around a bug in the AMD K8 CPUs.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Cleans up the system exit call slightly and synchronizes with my tree again.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
NR_CPUs can be quite big these days. kmalloc the per CPU array instead of
putting it onto the stack
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes mm->total_vm and mm->locked_vm acctounting in case when
move_page_tables() fails inside move_vma().
Signed-Off-By: Kirill Korotaev <dev@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a bug introduced by the "mm counter operations through
macros" patch, which replaced a decrement operation in with an increment
macro in try_to_unmap_one().
Signed-off-by: Bjrn Steinbrink <B.Steinbrink@gmx.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We we set the too early, they may still be in place and possibly get called
even though the array didn't get set up properly.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When a request crosses a boundary between devices, it needs to be split.
But where we should calculate the amount of the request before the boundary
to find the split-point, we care currently calculating the amount that is
*after* the boundary !!!
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Replace one memcpy() call with overlapping source and dest arguments with
one call to memmove(), to avoid data corruption.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Actually remove elf.h in the tree. The previous patch, due to a quilt
bug/misuse, left it in the tree as a 0-length file, preventing the build to
see it as missing and to generate a symlink in its place.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
VmallocTotal: 34359738367 kB
VmallocUsed: 266288 kB
VmallocChunk: 18014366299193295 kB
is unsettling - x86_64 and some other architectures keep a separate address
range for modules in vmalloc's vmlist, which /proc/meminfo should pass over.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
serport - avoid calling serio_interrupt or serio_write_wakeup on unregistered
port. Also fix memory leak which could happen if serport was left unused by
moving serio allocation down to serport_ldisc_read.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
ALPS needs to be reset for detection to work reliably when reconnecting.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
serio - do not attempt to immediately disconnect port if resume failed, let
kseriod take care of it. Otherwise we may attempt to unregister associated
input devices which will generate hotplug events which are not handled well
during swsusp.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is a tiny patch that fixes bttv-cards.c so that Leadtek WinFast VC100
XP video capture cards work. I've been advised to post it here after
having already posted it to the v4l mailing list.
Acked-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds support for the DeLorme Earthmate lt-20 to the
cypress_m8 driver. The device was tested and found to be compatible
with the cypress_m8 driver. This is a resend with the complete patch
which properly compiles.
Adds support for the DeLorme Earthmate lt-20 to the cypress_m8 driver.
Signed-off-by: Lonnie Mendez <lmendez19@austin.rr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Force the EHCI watchdog timer off during suspend, in case for some
reason it was still running after the root hub suspended.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Updates to the usbnet driver:
- Remove a warning when built with Zaurus support but not CDC Ethernet;
just moves an #ifdef to cover more code
- Two tweaks to the pseudo-MDLM support:
* correctly handle _either_ of the two GUIDs
* ignore a padding bit that doesn't seem necessary
- Remove ID for one Motorola phone that uses the MDLM stuff.
It also updates the Kconfig helptext to make it clearer that the "Zaurus"
configuration option supports an increasing (sigh) family of nonstandard
peripheral protocols.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
ioctl_by_bdev may only be used INSIDE the kernel. If the "arg" argument
refers to memory that is accessed by put_user/get_user in the ioctl
function, the memory needs to be in the kernel address space (that's the
set_fs(KERNEL_DS) doing in the ioctl_by_bdev). This works on i386 because
even with set_fs(KERNEL_DS) the user space memory is still accessible with
put_user/get_user. That is not true for s390. In short the ioctl
implementation of the pktcdvd device driver is horribly broken.
Signed-off-by: Peter Osterlund <petero2@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[Patch] Fix raw device ioctl pass-through
Raw character devices are supposed to pass ioctls through to the block
devices they are bound to. Unfortunately, they are using the wrong
function for this: ioctl_by_bdev(), instead of blkdev_ioctl().
ioctl_by_bdev() performs a set_fs(KERNEL_DS) before calling the ioctl,
redirecting the user-space buffer access to the kernel address space.
This is, needless to say, a bad thing.
This was noticed first on s390, where raw IO was non-functioning. The
s390 driver config does not actually allow raw IO to be enabled, which
was the first part of the problem. Secondly, the s390 kernel address
space is distinct from user, causing legal raw ioctls to fail. I've
reproduced this on a kernel built with 4G:4G split on x86, which fails
in the same way (-EFAULT if the address does not exist kernel-side;
returns success without actually populating the user buffer if it does.)
The patch below fixes both the config and address-space problems. It's
based closely on a patch by Jan Glauber <jang@de.ibm.com>, which has
been tested on s390 at IBM. I've tested it on x86 4G:4G (split address
space) and x86_64 (common address space).
Kernel-address-space access has been assigned CAN-2005-1264.
Signed-off-by: Stephen Tweedie <sct@redhat.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Version 2 of the 3com OfficeConnect 11g Cardbus Card aka 3CRWE154G72 is not
supported by the prism54 project. To stop confusion, the kernel
documentation should state so as 3com made a good job hiding the version.
Signed-off-by: Andrew Morton <akpm@osdl.org>
diff -puN drivers/net/wireless/Kconfig~wireless-3crwe154g72-kconfig-help-fix drivers/net/wireless/Kconfig
This has been a problem for me for ages. When using bridging, the driver
is switched into promiscuous mode before the link init is complete. The
init complete routine then resets the promisc bit on the card so the kernel
still thinks the card is in promiscuous mode but the card isn't. doh.
I think this bug only shows up in bridging when the bridge is started at
boot time (or something else that sets promisc at the same time the card
was started). If promisc is enabled later it works.
Here's a trivial (and hopefully correct) patch that works for me. It
just calls the promisc/multicast setup routine after init.
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Fix IBM EMAC driver ioctl bug.
I found IBM EMAC driver bug.
So mii-tool command print wrong status.
# mii-tool
eth0: 10 Mbit, half duplex, no link
eth1: 10 Mbit, half duplex, no link
I can get correct status on fixed kernel.
# mii-tool
eth0: negotiated 100baseTx-FD, link okZZ
eth1: negotiated 100baseTx-FD, link ok
Hiroaki Fuse
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> for CELF
NET_WIRELESS is only a subset of the stuff in drivers/net/wireless;
NET_RADIO is what covers all of them.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Updated patch to fix erroneous flush of COMRESET set and missing flush
of COMRESET clear. Created a new routine scr_write_flush() to try to
prevent this in the future. Also, this patch is based on libata-2.6
instead of the previous libata-dev-2.6 based patch.
Signed-off-by: Brett Russ <russb@emc.com>
Index: libata-2.6/drivers/scsi/libata-core.c
===================================================================
Problem:
During the libata CD-ROM stress test, sometimes the "BUG: timeout
without command" error is seen.
Root cause:
Unexpected interrupt occurs after the ata_qc_complete() is called,
but before the SCSI error handler. The interrupt handler is invoked
before the SCSI error handler, and it clears the command by calling
ata_qc_complete() again. Later when the SCSI error handler is run,
the ata_queued_cmd is already gone, causing the "BUG: timeout without
command" error.
Changes:
- Use the ATA_QCFLAG_ACTIVE flag to prevent the interrupt handler
from completing the command twice, before the scsi_error_handler.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
The module parameter values got lost in the conversion to the new module_param
interface. This should fix it.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Index: tlan/drivers/net/tlan.c
===================================================================
This patch fixes the following compile error caused by bk-netdev:
<-- snip -->
...
LD .tmp_vmlinux1
drivers/built-in.o(.text+0x98528): In function `sis900_get_settings':
: undefined reference to `mii_ethtool_gset'
drivers/built-in.o(.text+0x98538): In function `sis900_set_settings':
: undefined reference to `mii_ethtool_sset'
drivers/built-in.o(.text+0x98517): In function `sis900_get_link':
: undefined reference to `mii_link_ok'
drivers/built-in.o(.text+0x98547): In function `sis900_nway_reset':
: undefined reference to `mii_nway_restart'
make: *** [.tmp_vmlinux1] Error 1
<-- snip -->
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Daniele Venzano <venza@brownhat.org>
When running the loopback test, resources are not properly released on
completion. This patch frees all transmit resources after running the
loopback test. Tested on ia32 and ppc64 hardware.
Signed-off-by: Don Fry <brazilnut@us.ibm.com>
This patch brings the airo driver into line with the current
WEXT specification of signal quality. It also fixes the values
used to determine signal quality and level for MPI & PCMCIA 350
cards. It turns out that BSSListRid.rssi was actually in dBm
for 350 series cards, and that we can use the normalized
signal strength reported by the card as our "quality" value, on
a scale of 0 - 100. Since signal level values are in dBm for
this driver, max_qual->level MUST be 0, as specified in the WEXT
spec. This patch also uses the IW_QUAL constants new in WEXT
version 17.
Signed-off-by: Dan Williams <dcbw@redhat.com>
On Wed, Apr 13, 2005 at 05:36:42PM +0000, Andrew Morton wrote:
> Summary: natsemi: incorrect initialization of IPv6 Neighbor-
> discovery multicast
I've got a pair of FA312 cards and this problem has bothered me
for ages. This has finally prompted me to do something about it :)
Turns out that somebody wasn't following the documentation. We were
doing 16-bit writes to 32-bit registers which led to some addresses
working and others not so lucky.
This patch should fix the problem.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Ayaz wrote an update to the error handling for forcedeth (which I
modified heavily, thus all bugs are mine):
The ERROR4 bit is not a fatal error, it just indicates a mismatch
between the actual packet len and the len according to the 802.3 header.
The patch adds proper handling.
The patch also removes the code that drops all packets with RX_ERROR &
(!RX_FRAMINGERR): ERROR4 errors are also not fatal.
Hi Andrew, Jeff,
The iseries_veth driver is badly behaved in that it will keep TX packets
hanging around forever if they're not ACK'ed and the queue never fills up.
This causes the unregister_netdevice code to wait forever when we try to take
the device down, because there's still skbs around with references to our
struct net_device.
There's already code to cleanup any un-ACK'ed packets in veth_stop_connection()
but it's being called after we unregister the net_device, which is too late.
The fix is to rearrange the module exit function so that we cleanup any
outstanding skbs and then unregister the driver.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Hi Andrew, Jeff,
Under some strange circumstances the iseries_veth driver can leak skbs.
Fix is simply to call dev_kfree_skb() in the right place.
Fix up the comment as well.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Hi Andrew, Jeff,
The iseries_veth driver doesn't set dev->trans_start in it's TX path. This
will cause the net device watchdog timer to fire earlier than we want it to,
which causes the driver to needlessly reset its connections to other LPARs.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Hi Andrew, Jeff,
The iseries_veth driver has a logic bug which means it will erroneously
send packets to LPARs for which we don't have a connection.
This usually isn't a big problem because the Hypervisor call fails
gracefully and we return, but if packets are TX'ed during the negotiation
of the connection bad things might happen.
Regardless, the right thing is to bail early if we know there's no
connection.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
[patch 10/10] s390: qeth bug fixes.
From: Frank Pavlic <pavlic@de.ibm.com>
qeth network driver related changes:
- due to OSA hardware changes in TCP Segmentation Offload
support we are able now to pack TSO packets too.
This fits perfectly in design of qeth buffer handling and
sending data respectively.
- remove skb_realloc_headroom from the sending path since
hard_header_len value provides enough headroom now.
- device recovery behaviour improvement
- bug fixed in Enhanced Device Driver Packing functionality
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
[patch 8/10] s390: fakell for high speed token ring.
From: Michael Holzheu <holzheu@de.ibm.com>
Implement fake-link-layer for high speed token ring. Without it
token ring packages get leading ethernet headers, which confuses
dhcp.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
[patch 7/10] s390: qeth bug fixes.
From: Frank Pavlic <pavlic@de.ibm.com>
qeth network driver changes:
- Removed redundant code, use the same qeth_fill_buffer_frag
for TSO path either
- Using skb->frags solely is not correct since skb->data still
points to the beginning of the whole data, even when it is
a small portion we have to fill the qdio buffer with it.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
[patch 6/10] s390: enable iucv_send2way_xxx functions.
From: Ursula Braun-Krahl <braunu@de.ibm.com>
The SSL-Server of z/VM wants to use the iucv_send2way
and iucv_send2way_array function. Enable them again.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
[patch 4/10] s390: schedule_timeout cleanup in ctctty.
From: Domen Puncer <domen@coderock.org>
Use msleep_interruptible() instead of schedule_timeout()
to guarantee the task delays as expected.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Maximilian Attems <janitor@sternwelten.at>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[patch 3/10] s390: set online race in the lcs driver.
From: Michael Holzheu <holzheu@de.ibm.com>
There is a race between lcs_stopcard() and lcs_open_device() which
can lead to the error 'lcs: Error in starting channel, rc=-16'.
lcs_open_device() is invoked when 'ifconfig up' is called due to a
hotplug event, which is caused by register_netdev(). In parallel
lcs_stopcard() is executed. Both functions are sending lcs commands.
The second invocation fails with -EBUSY (-16) as return value.
Move invocation of register_netdev() after invocation of lcs_stopcard
to avoid the race.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
[patch 2/10] s390: multicast address registration in lcs.
From: Michael Holzheu <holzheu@de.ibm.com>
When setting lcs devices online you can run into an endless loop,
because the code that registers the multicast addresses uses
list_for_each_entry instead of list_for_each_entry_safe.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
[patch 1/10] s390: claw driver wiring.
From: Andy Richter <richtera@us.ibm.com>
claw network driver changes:
- Add an entry to the drivers/s390/net Makefile to build the claw driver.
- Add claw channel type to cu3088.
Signed-off-by: Frank Pavlic <pavlic@de.ibm.com>
Avoid changing sdev->host->max_sectors because it can prevent use of
non-lba48 drives on other ports of the same adapter.
Signed-off-by: Stuart Hayes <stuart_hayes@Dell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Fixed msec_delay in osdep to use msleep
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_osdep.h net-drivers-2.6/drivers/net/ixgb.new/ixgb_osdep.h
Remove hook for suspend. No power management in 10GbE Controllers
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c
Reset status in the Rx descriptor prior to handing it to the controller.
Leave three Rx descriptors unused
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c
Disable RXO interrupt to decrease recovery time when system is overloaded with data
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c
Don't set the RS bit on context descriptors, causes un-necessary bus activity
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/ixgb/ixgb_main.c net-drivers-2.6/drivers/net/ixgb.new/ixgb_main.c
Implement 82546 errata 10 -- first Tx descriptor cannot have more than 2015 byte of data in it or it could hang the transmitter.
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Dump information on Tx ring when 'NETDEV: Watchdog' condition is reached
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Delay clean-up of last Tx packet to fix pre-mature writeback issue of Tx descriptors only when TSO is enabled
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Fix kernel panic with 82541 LOM when using a 100M cable
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Enable polling before enabling interrupts -- avoids (in NAPI mode) entering the ISR and returning without doing any work because polling is not enabled. [romieu@fr.zoriel.com]
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_main.c net-drivers-2.6/drivers/net/e1000.new/e1000_main.c
Fix msec-delay definition in e1000_osdep.h to use msleep
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_osdep.h net-drivers-2.6/drivers/net/e1000.new/e1000_osdep.h
Added enhanced functionality to the loopback diags to wrap the descriptor rings.
Signed-off-by: Mallikarjuna R Chilakala <mallikarjuna.chilakala@intel.com>
Signed-off-by: Ganesh Venkatesan <ganesh.venkatesan@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
diff -up net-drivers-2.6/drivers/net/e1000/e1000_ethtool.c net-drivers-2.6/drivers/net/e1000.new/e1000_ethtool.c
Add support to sis900 for the following ethtool ops:
- get_link
- get_settings
- set_settings
- nway_reset
Signed-off-by: Daniele Venzano <webvenza@libero.it>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
The size of the incoming frame is not correctly checked.
The RxMaxSize register (0xDA) does not work as expected and incoming
frames whose size exceeds the MTU actually end spanning multiple
descriptors. The first Rx descriptor contains the size of the whole
frame (or some garbage in its place). The driver does not expect
something above the space allocated to the current skb and crashes
loudly when it issues a skb_put.
The fix contains two parts:
- disable hardware Rx size filtering: so far it only proved to be able
to trigger some new fancy errors;
- drop multi-descriptors frame: as the driver allocates MTU sized Rx
buffers, it provides an adequate filtering.
As a bonus, wrong descriptors were not returned to the asic after their
processing.
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This patch makes the netif_rx_complete() and rx_interrupt_enable
atomic when exiting the poll() method, so to avoid interrupt in poll.
It also fixes the rx interrupt check logic in interrupt handler.
Signed-off-by: Liu Tao <liutao1980@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Patch from Ben Dooks
Fix the setting of hdiv when set to divide-by-2. Thanks to
Jeonghoon Yoon for pointing this out.
Change name of the NAND device to "s3c2440-nand" as it
is not similar enough to the "s3c2410-nand" device.
Signed-off-by: Ben Dooks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Ben Dooks
S3C2440 UPLL is the same as the S3C2410 UPLL, it is only the
MPLL which has an extra multiplication factor of 2 in the
multiplier.
Signed-off-by: Ben Dooks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Ben Dooks
Add the register definitions for the s3c2440 NAND controller
to the s3c2410 NAND register definitions
Signed-off-by: Ben Dooks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Nicolas Pitre
Not all ARMv6 processors implement the TLS register.
Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
If some hardware error occurs and the flush flag never updates,
we will hang forever in these routines. Add a timeout, and
print out a diagnostic if it is reached.
Signed-off-by: David S. Miller <davem@davemloft.net>
Some time ago, GAS was fixed to bring the .spillpsp directive in line
with the Intel assembler manual (there was some disagreement as to
whether or not there is a built-in 16-byte offset). Unfortunately,
there are two places in the kernel where this directive is used in
handwritten assembly files and those of course relied on the "buggy"
behavior. As a result, when using a "fixed" assembler, the kernel
picks up the UNaT bits from the wrong place (off by 16) and randomly
sets NaT bits on the scratch registers. This can be noticed easily by
looking at a coredump and finding various scratch registers with
unexpected NaT values. The patch below fixes this by using the
.spillsp directive instead, which works correctly no matter what
assembler is in use.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch from Sascha Hauer
This patch adds the defines for the i.MX PWM controller
Signed-off-by: Steven Scholz
Signed-off-by: Sascha Hauer
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Move the locking for copy_user_page() and clear_user_page() into
the implementations which require locking. For simple memcpy/
memset based implementations, the locking is extra overhead which
is not necessary, and prevents preemption occuring.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Add uart_insert_char(), which handles inserting characters into the
flip buffer. This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Add pmd_off() and pmd_off_k() to obtain the pmd pointer for a
virtual address, and use them throughout the mm initialisation.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
I noticed this typo when trying to compile a kernel which had
CONFIG_HOTPLUG turned off. In that case, __devinit is no longer a
no-op and the compiler then detects a section-conflict. Fix by using
__devinitdata instead of __devinit.
Same patch also submitted by Darren Williams to fix compilation error
using sim_defconfig (which has CONFIG_HOTPLUG=n).
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Darren Williams <dsw@gelato.unsw.edu.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Updates to the wbsd driver.
* Fix to handle DAT3 card detection.
* Fixed bug which could cause large writes to stall in FIFO mode.
* Plug 'n Play support. In most cases you need ACPI PNP for this to work.
* Uses generic DMA API (ISA dependency removed).
This fixes some x86_64 bugs -
- maybe_map returns -1 on error instead of 0, which is interpreted as
physical address 0
- removed an include of ipc.h, which isn't needed
- fixed the calculation of signal frame location
- the signal delivery code is now immune to the stack expansion check
- added a missing include
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
tt-mode closes switch_pipes in exit_thread_tt and kills processes in
switch_to_tt, if the exit_state is EXIT_DEAD or EXIT_ZOMBIE.
In very rare cases the exiting process can be scheduled out after having set
exit_state and closed switch_pipes (from release_task it calls proc_pid_flush,
which might sleep). If this process is to be restarted, UML failes in
switch_to_tt with:
write of switch_pipe failed, err = 9
We fix this by closing switch_pipes not in exit_thread_tt, but later in
release_thread_tt. Additionally, we set switch_pipe[0] = 0 after closing.
switch_to_tt must not kill "from" process depending on its exit_state, but
must kill it after release_thread was processed only, so it examines
switch_pipe[0] for its decision.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Only x86 and x86_64 use arch_align_stack(), all other subarches have:
#define arch_align_stack(x) (x)
So, if this definition is found, UML's own arch_align_stack() should be
skipped.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
So, there I was, looking at my own code, wondering what the magic setjmp
return values did. This patch turns the constants that are used to make
requests of the initial thread into meaningful symbols.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This eliminates some stuff from arch/um/kernel/Makefile which refers to a
file which has long since been deleted.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Eliminate the non-inline version of switch_mm, which can't be used,
considering the inline version in asm/mmu_context.h
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
s390 needs to change some parts of arch/um/kernel/ptrace.c. Thus, the code
regarding PEEKUSER and POKEUSER are shifted to arch/um/sys-<subarch>/ptrace.c.
Also s390 debug registers need to be updated, when singlestepping is switched
on / off. Thus, setting/resetting of singlestepping is centralized in the new
function set_singlestep(), which also inserts the macro
SUBARCH_SET_SINGLESTEP(mode), if defined.
Finally, s390 has the "ieee_instruction_pointer" in its
registers, which also is allowed to be read via
ptrace( PTRACE_PEEKUSER, getpid(), PT_IEEE_IP, 0);
To implement this feature, sys_ptrace inserts the macro
SUBARCH_PTRACE_SPECIAL, if defined.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Command line handling cleanups - a couple of things made static and an
unused declaration removed from header.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I accidentally included include/asm-um/elf.h as a real file in a previous
patch. This patch eliminates it.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove the __deprecated from verify_area_skas and verify_area_tt. Since
verify_area is itself marked __deprecated, and it is the only caller of
these, then they don't need to be marked. Marking them only makes the
build noisier.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds a VIDIOC_G_FREQUENCY command to tuner-core.c and sets
lowest and highest tunable frequencies in v4l2_tuner structure returned by
VIDIOC_G_TUNER command.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Cc: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In VIDIOC_S_FREQUENCY command in tuner-core.c, t->freq is set to a new
value before calling set_freq(). This is not necessary, as set_freq() sets
t->freq itself. Moreover, it causes problems with Philips tuners, as they
need to take into consideration difference between previous and new
frequency.
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Cc: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In separating out support for hardware floating point we missed the fact
that both POWER3 and POWER4 have HW FP. Enable CONFIG_PPC_FPU for POWER3
and POWER4 fixes the issue.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch enables CONFIG_RTAS_PROC by default on pSeries. This will
preserve /proc/ppc64/rtas/rmo_buffer, which is needed by librtas.
Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This change from March 3rd causes the partition parsing code to ignore
partitions which have a signature byte of zero. Turns out that more people
have such partitions than we expected, and their device numbering is coming up
wrong in post-2.6.11 kernels.
So revert the change while we think about the problem a bit more.
Cc: Andries Brouwer <Andries.Brouwer@cwi.nl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I somehow missed that there is external usage of rd_size on some
architectures.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There's a slight bug in the routines in that if the period requires dt,
then the routine will unconditionally set it. DT may only be set if
Wide is also set, so this turns back on the wide bit.
For domain validation to work correctly, we need to observe the wide bit
absolutely.
Acked by: Matthew Wilcox <willy@debian.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Without this patch, the stack is placed _below_ the current task
structure, which is risky at best.
Tony, I think this patch needs to go into 2.6.12, since it fixes a
real bug. Without it, INIT may case secondary errors, which would be
most unpleasant.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Trying software suspend on my workstation makes it crash on resume. The
problem is that via82xx marks the chip_init function as _devinit, but calls
it on resume as well.
Cc: <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Move the code to set global interrupt queue membership to xics.c,
and remove no longer needed extern declarations. Also call it on
all cpus (even the boot cpu) to prepare for kexec.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: R Sharada <sharada@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This may be the cause of several open PV's of incorrect
delay flags being set and then tripping asserts.
Do not return a delay alloc extent when the caller is asking to do a write.
SGI Modid: xfs-linux:xfs-kern:189616a
Signed-off-by: Russell Cattelan <cattelan@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>
Trivial patch to remove our last direct reference to contig_page_data.
This will make it just that much less hard to seperate NUMA and
DISCONTIG. Please forward on. Against 2.6.12-rc1
Signed-off-by: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
start.c is not referenced in the arch/ppc64/boot/Makefile
compile tested with the defconfig.
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The defines in bootinfo.h are not used, so the include can be removed.
According to Ben, birecs are not used on ppc64:
on ppc64, we made the decision of enforcing the presence of an
OF device-tree and either an OF-like client interface or a kexec
like flattened tree.
so if your bootloader want to say things to the kernel,
it can do so by adding properties to the device-tree
compile-tested with defconfig
Signed-off-by: Olaf Hering <olh@suse.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The code in reloc_offset is actually subtracting the address in the link
register from the address calculated by the linker. Perhaps the
extended mnemonic `sub' replaced an original `subf' and the comment just
did not get updated.
bl 1f
1: mflr r3
LOADADDR(r4,1b)
sub r3,r4,r3
Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The code in unflatten_device_tree knows that get_property is written to
only return with lenp equal to 1 when also returning a valid pointer.
The gcc 3.3.3 compiler is not able to prove this to itself, so it warns
about a possible uninitialized pointer dereference:
.../arch/ppc64/kernel/prom.c: In function `unflatten_device_tree':
.../arch/ppc64/kernel/prom.c:828:
warning: `p' might be used uninitialized in this function
Unless it is desired to rework the interaction between the two
functions, this will keep the existing behavior but quiet the compiler.
Signed-off-by: Amos Waterland <apw@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Replace a custom MIN() macro with the min() macro from kernel.h
This patch removes 4 lines of redundant code.
Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes an off by one error found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
this clarifies the documentation on the behavier of strncpy().
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The regression test in lib/sort.c is currently worthless because the array
that is generated for sorting will be all zeros. This patch fixes things
so that the array that is generated will contain unsorted integers (that
are not all identical) as was probably intended.
Signed-off-by Daniel Dickman <didickman@yahoo.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Changed Name/defines from "Geode GX" to "Geode GX1" for clarification
- Dropped "-march=i586" in favor of "-march=i486"
- Dopped X86_OOSTORE support for Geode GX1
Signed-off-by: Kianusch Sayah Karadji <kianusch@sk-tech.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ross moved. Remove the bad email address so people will find the correct
one in ./CREDITS.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When I do a "diff -Nur arch/i386 arch/x86_64" to see what is different between these two
architectures, I see some differences due to whitespace issues only. The attached patch removes
some of the noise by fixing up the following files:
- arch/i386/boot/bootsect.S
- arch/i386/boot/video.S
- arch/x86_64/boot/bootsect.S
Signed-off-by: Daniel Dickman <didickman@yahoo.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
compile warning cleanup - suggested by Adrian Bunk; remove unmaintained rcs
char strings from source and handle the occurrences of their use, make sure
kernel-userspace issues taken care of; break out into separate patch
Signed-off-by: Stephen Biggs <yrgrknmxpzlk@gawab.com>
Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add some comments about task->comm, to explain what it is near its definition
and provide some important pointers to its uses.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use NULL instead of 0 for pointer (sparse warning):
fs/reiserfs/namei.c:611:50: warning: Using plain integer as NULL pointer
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch makes some needlessly global code static.
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The dm emc hardware handler code memset the hardware handler structure to zero
AFTER it had initialized the structure's spinlock field.
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
From: Dave Olien <dmo@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
dm-mpath.c needs to use a private workqueue (like other dm targets already do)
to avoid interfering with users of the default workqueue.
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Lars Marowsky-Bree <lmb@suse.de>
Signed-off-by: <mikenc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Allow freeze_bdev() to return an error.
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
From: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Store the struct block_device while device is frozen, saving us one call to
bdget_disk().
Signed-Off-By: Alasdair G Kergon <agk@redhat.com>
From: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This had a fatal lock ranking bug: we do journal_start outside
mpage_writepages()'s lock_page().
Revert the whole thing, think again.
Credit-to: Jan Kara <jack@suse.cz>
For identifying the bug.
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Attached is a patch to bttv which fixes the following problems.
Affected cards and problems:
~~~~~~~~~~~~~~~~~~~~~~~~
o VP-1020 (200103A) Tuning problems, device detection.
o VP-1020 (DST-MOT) Errors during tuning, device detection fails in a while.
o VP-1030 (DST-CI) Tuning sometimes fails after CI commands.
o VP-2031 (DCT-CI) Tuning problems
The timeout happens before the actual timeout occured in the MCU
on the board, and hence the problems.
Changes: (bttv-i2c.diff)
~~~~~~~~~~~~~~~~~~~~~~~~
o Changed the custom wait queue to wait_event_interruptible_timeout()
- Suggestion by Johannes Stezenbach.
o Fixed the wait queue timeout problem
- This fixes the timeout problem on various cards.
- This problem was visible as many
* Cannot tune to channels, when signal levels are very low.
* app_info does not work in some conditions for CI based cards
- Smaller values worked good for newer cards, but the older cards
suffered, settled down to the worst case values that could happen in any
eventuality.
Signed-off-by: Manu Abraham <manu@kromtek.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds support for a new class of DAC960 controllers. It's based
on the GPLed idac320 driver from IBM for Linux 2.4.18. That driver is a
fork of the 2.4.18 version of DAC960 that adds support for this new type of
controllers (internally called "GEM Series"), that differ from other DAC960
V2 firmware controllers only in the register offsets and removes support
for all others.
This patch instead integrates support for these controllers into the DAC960
driver.
Thanks to Anders Norrbring for pointing me to the idac320 driver and
testing this patch.
No Signed-Off: line because all code is either copy & pasted from IBM's
idac320 driver or support for other controllers in the 2.6 DAC960 driver.
Note: the really odd formating matches the rest of the DAC960 driver.
Cc: Dave Olien <dmo@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Make sure that if the INTRTIE bit is set both functions of the cardbus
bridge use the same IRQ before doing any probing...
[ yes i hate the TI bridges for the fact that they are very flexible
so that so many BIOS vendors get it wrong. ]
Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch handles the VIDIOC_S_FMT and VIDIOC_G_FMT ioctls for the
saa6752hs.
As only 4 preset video formats are supported (SIF, 1/2D1, 2/3D1, D1), we
compute to which the asked resolution is the nearest and apply it.
Signed-off-by: Frederic Cand <frederic.cand@anevia.com>
Acked-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It seems that the code responsible for this is in kernel/itimer.c:126:
p->signal->real_timer.expires = jiffies + interval;
add_timer(&p->signal->real_timer);
If you request an interval of, lets say 900 usecs, the interval given by
timeval_to_jiffies will be 1.
If you request this when we are half-way between two timer ticks, the
interval will only give 400 usecs.
If we want to guarantee that we never ever give intervals less than
requested, the simple solution would be to change that to:
p->signal->real_timer.expires = jiffies + interval + 1;
This however will produce pathological cases, like having a idle system
being requested 1 ms timeouts will give systematically 2 ms timeouts,
whereas currently it simply gives a few usecs less than 1 ms.
The complex (and more computationally expensive) solution would be to
check the gettimeofday time, and compute the correct number of jiffies.
This way, if we request a 300 usecs timer 200 usecs inside the timer
tick, we can wait just one tick, but not if we are 800 usecs inside the
tick. This would also mean that we would have to lock preemption during
these computations to avoid races, etc.
I've searched the archives but couldn't find this particular issue being
discussed before.
Attached is a patch to do the simple solution, in case anybody thinks
that it should be used.
Signed-Off-By: Paulo Marques <pmarques@grupopie.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The `last_bh' logic probably isn't worth much. In those situations where only
the front part of the page is being written out we will save some looping but
in the vastly more common case of an all-page writeout if just adds more code.
Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove all those get_bh()'s and put_bh()'s by extending lock_page() to cover
the troublesome regions.
(get_bh() and put_bh() happen every time whereas contention on a page's lock
in there happens basically never).
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When running
fsstress -v -d $DIR/tmp -n 1000 -p 1000 -l 2
on an ext2 filesystem with 1024 byte block size, on SMP i386 with 4096 byte
page size over loopback to an image file on a tmpfs filesystem, I would
very quickly hit
BUG_ON(!buffer_async_write(bh));
in fs/buffer.c:end_buffer_async_write
It seems that more than one request would be submitted for a given bh
at a time.
What would happen is the following:
2 threads doing __mpage_writepages on the same page.
Thread 1 - lock the page first, and enter __block_write_full_page.
Thread 1 - (eg.) mark_buffer_async_write on the first 2 buffers.
Thread 1 - set page writeback, unlock page.
Thread 2 - lock page, wait on page writeback
Thread 1 - submit_bh on the first 2 buffers.
=> both requests complete, none of the page buffers are async_write,
end_page_writeback is called.
Thread 2 - wakes up. enters __block_write_full_page.
Thread 2 - mark_buffer_async_write on (eg.) the last buffer
Thread 1 - finds the last buffer has async_write set, submit_bh on that.
Thread 2 - submit_bh on the last buffer.
=> oops.
So change __block_write_full_page to explicitly keep track of the last bh
we need to issue, so we don't touch anything after issuing the last
request.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix a race where __block_prepare_write can leak out an in-flight read
against a bh if get_block returns an error. This can lead to the page
becoming unlocked while the buffer is locked and the read still in flight.
__mpage_writepage BUGs on this condition.
BUG sighted on a 2-way Itanium2 system with 16K PAGE_SIZE running
fsstress -v -d $DIR/tmp -n 1000 -p 1000 -l 2
where $DIR is a new ext2 filesystem with 4K blocks that is quite
small (causing get_block to fail often with -ENOSPC).
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
During a warm boot the device is in D3 and has troubles coming out of it.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add better support for (non-incremental) 2.6.x.y patches; If an ending
version number if not specified, the script automatically increments the
SUBLEVEL (x in 2.6.x.y) until no more patch files are found; however,
EXTRAVERSION (y in 2.6.x.y) is never automatically incremented but must be
specified fully.
patch-kernel does not normally support reverse patching, but does so when
applying EXTRAVERSION (x.y) patches, so that moving from 2.6.11.y to
2.6.11.z is easy and handled by the script (reverse 2.6.11.y and apply
2.6.11.z).
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Allow registration of multiple kprobes at an address in an architecture
agnostic way. Corresponding handlers will be invoked in a sequence. But,
a kprobe and a jprobe can't (yet) co-exist at the same address.
Signed-off-by: Ananth N Mavinakayanahalli <amavin@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
kernel oops! when unregister_kprobe() is called on a non-registered
kprobe. This patch fixes the above problem by checking if the probe exists
before unregistering.
Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Kprobes could not handle the insertion of a probe on the ret/lret
instruction and used to oops after single stepping since kprobes was
modifying eip/rip incorrectly. Adjustment of eip/rip is not required after
single stepping in case of ret/lret instruction, because eip/rip points to
the correct location after execution of the ret/lret instruction. This
patch fixes the above problem.
Signed-off-by: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove some definitions and declarations from arch/um/include/skas_ptrace.h,
as they have moved to arch/um/include/sysdep/skas_ptrace.h
Also, remove PTRACE_SIGPENDING support in UML at all.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
s390 passes parameters in registers. So the only safe way to find out the
address of signal context, error-address and error-type (trap_no), which are
passed to signal handlers as parameters, is to declare these parameters.
So I inserted an subarch-specific macro which holds the declaration of
parameters for signal handlers.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
s390 has fast read access to realtime clock (nanosecond resolution). So it
makes sense to have an arch-specific implementation not only of __delay, but
__udelay also.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Checksum handling largely depends on the subarch.
Thus, I renamed i386 arch_csum_partial in arch/um/sys-i386/checksum.S back to
csum_partial, removed csum_partial from arch/um/kernel/checksum.c and shifted
EXPORT_SYMBOL(csum_partial) to arch/um/sys-i386/ksyms.c.
Then, csum_partial_copy_to and csum_partial_copy_from were shifted from
arch/um/kernel/checksum.c to arch/um/include/sysdep-i386/checksum.h and
inserted in the calling functions csum_partial_copy_from_user() and
csum_and_copy_to_user().
Now, arch/um/kernel/checksum.c is empty and removed.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch make elh.h a symlink to the new arch-specific include files of the
form elf-<subarch>.h, as in the same way already is done for some other
includes. Also moves Elf-stuff from archparam-<subarch>.h and elf.h to the
new elf-<subarch>.h files.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This cleans up the error handling and fixes a crash if a hostfs mount fails.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The completion cleanup got rid of some semaphores, but didn't remove the
inclusion of asm/semaphore.h from xterm_kern.c.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This makes SIGWINCH work again, and fixes a couple of SIGWINCH-associated
crashes. First, the sigio thread disables SIGWINCH because all hell breaks
loose if it ever gets one and tries to call the signal handling code. Second,
there was a problem with deferencing tty structs after they were freed. The
SIGWINCH support for a tty wasn't being turned off or freed after the tty went
away.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes the arch-specific fault/trap-infos from thread and
skas-regs.
It adds a new struct faultinfo, that is arch-specific defined in
sysdep/faultinfo.h.
The structure is inserted in thread.arch and thread.regs.skas and
thread.regs.tt
Now, segv and other trap-handlers can copy the contents from regs.X.faultinfo
to thread.arch.faultinfo with one simple assignment.
Also, the number of macros necessary is reduced to
FAULT_ADDRESS(struct faultinfo)
extracts the faulting address from faultinfo
FAULT_WRITE(struct faultinfo)
extracts the "is_write" flag
SEGV_IS_FIXABLE(struct faultinfo)
is true for the fixable segvs, i.e. (TRAP == 14)
on i386
UPT_FAULTINFO(regs)
result is (struct faultinfo *) to the faultinfo
in regs->skas.faultinfo
GET_FAULTINFO_FROM_SC(struct faultinfo, struct sigcontext *)
copies the relevant parts of the sigcontext to
struct faultinfo.
On SIGSEGV, call user_signal() instead of handle_segv(), if the architecture
provides the information needed in PTRACE_FAULTINFO, or if PTRACE_FAULTINFO is
missing, because segv-stub will provide the info.
The benefit of the change is, that in case of a non-fixable SIGSEGV, we can
give user processes a SIGSEGV, instead of possibly looping on pagefault
handling.
Since handle_segv() sikked arch_fixup() implicitly by passing ip==0 to segv(),
I changed segv() to call arch_fixup() only, if !is_user.
Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The next group of helpers is a bit trickier - they want the constants similar
to those in user-offsets.h, but we need target sc.h for it. So we can't put
that into user-offsets (sc.h depends on it) and need the second generated
header for that stuff (kernel-offsets.h. BFD...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Beginning of cross-build fixes. Instead of expecting that mk_user_constants
(compiled and executed on the build box) will see the sizeof, etc. for target
box, we do what every architecture already does for asm-offsets. Namely, have
user-offsets.c compiled *for* *target* into user-offsets.s and sed it into the
header with relevant constants. We don't need to reinvent any wheels - all
tools are already there.
This patch deals with mk_user_constants. It doesn't assume any relationship
between target and build environment anymore - we pick all defines we need
from user-offsets.h. Later patches will deal with the rest of mk_... helpers
in the same way.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use explicit os-... in make dependencies instead of playing with symlinks
(symlink in question is still created - it's needed for other things; however,
there's no reason to complicate ordering here).
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Fix some problems with usage of $(targets) (sometimes missing, sometimes
used badly) that trigger partial rebuilds when doing a rebuild.
- At that purpose, also factor out some common code for symlinks creation.
- Fix a x86-64 build warning, caused by -L/usr/lib, which is anyway useless,
and invalid in the x86-64 case.
Tested on x86_64 and x86.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In include/asm-x86_64/string.h there are such comments:
/* Use C out of line version for memcmp */
#define memcmp __builtin_memcmp
int memcmp(const void * cs,const void * ct,size_t count);
This would mean that if the compiler does not decide to use __builtin_memcmp,
it emits a call to memcmp to be satisfied by the C out-of-line version in
lib/string.c. What happens is that after preprocessing, in lib/string.i you
may find the definition of "__builtin_strcmp".
Actually, by accident, in the object you will find the definition of strcmp
and such (maybe a trick intended to redirect calls to __builtin_memcmp to the
default memcmp when the definition is not expanded); however, this particular
case is not a documented feature as far as I can see.
Also, the EXPORT_SYMBOL does not work, so it's duplicated in the arch.
I simply added some #undef to lib/string.c and removed the (now duplicated)
exports in x86-64 and UML/x86_64 subarchs (the second ones are introduced by
another patch I just posted for -mm).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
CC: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
These are some trivial fixes for the x86-64 subarch module support. The only
potential problem is that I have to modify arch/x86_64/kernel/module.c, to
avoid copying the whole of it.
I can't use it verbatim because it depends on a special vmalloc-like area for
modules, which for now (maybe that's to fix, I guess not) UML/x86-64 has not.
I went the easy way and reused the i386 vmalloc()-based allocator.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch does some totally trivial compilation fixes. It also restores the
debugregs manipulation, which was commented out simply because it doesn't
compile on x86_64 (we haven't yet implemented there debugregs handling).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch started as simply removing a few never-used macros from
asm-ppc64/pgtable.h, then kind of grew. It now makes a bunch of
cleanups to the ppc64 low-level header files (with corresponding
changes to .c files where necessary) such as:
- Abolishing never-used macros
- Eliminating multiple #defines with the same purpose
- Removing pointless macros (cases where just expanding the
macro everywhere turns out clearer and more sensible)
- Removing some cases where macros which could be defined in
terms of each other weren't
- Moving imalloc() related definitions from pgtable.h to their
own header file (imalloc.h)
- Re-arranging headers to group things more logically
- Moving all VSID allocation related things to mmu.h, instead
of being split between mmu.h and mmu_context.h
- Removing some reserved space for flags from the PMD - we're
not using it.
- Fix some bugs which broke compile with STRICT_MM_TYPECHECKS.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There's no help text for CONFIG_DEBUG_STACKOVERFLOW - add one.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While looking at code generated by gcc4.0 I noticed some functions still
had frame pointers, even after we stopped ppc64 from defining
CONFIG_FRAME_POINTER. It turns out kernel/Makefile hardwires
-fno-omit-frame-pointer on when compiling schedule.c.
Create CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER and define it on architectures
that dont require frame pointers in sched.c code.
(akpm: blame me for the name)
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We can identify new Freescale PPC cores by the fact that the MSB of the PVR
is set. If we are a new Freescale core the decode of major/minor revision
numbers is simplified so we dont have to add new case checks for a every
new Freescale core.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The PPC32 kernel puts platform-specific functions into separate sections so
that unneeded parts of it can be freed when we've booted and actually
worked out what we're running on today.
This makes kallsyms ignore those functions, because they're not between
_[se]text or _[se]inittext. Rather than teaching kallsyms about the
various pmac/chrp/etc sections, this patch adds '_[se]extratext' markers
for kallsyms.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The following patch works around the misdetection of the CXT48 codec as a
modem by the OSS ac97 driver.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fixes for big-endian systems in soundcard.h and awe_voice.h
This patch fixes the AFMT_S16_NE (include/linux/soundcard.h) and AWE_PATCH
(awe_voice.h) macros on big-endian systems.
It also moves _PATCHKEY into a new file, patchkey.h, in order to remove a
duplicate definition of it from awe_voice.h.
Signed-off-by: Stuart Brady <sdbrady@ntlworld.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This makes sure that reclaimable buffer headers and reclaimable inodes
are accounted properly during the overcommit checks.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The recent change fix-crash-in-entrys-restore_all.patch
childregs->esp = esp;
p->thread.esp = (unsigned long) childregs;
- p->thread.esp0 = (unsigned long) (childregs+1);
+ p->thread.esp0 = (unsigned long) (childregs+1) - 8;
p->thread.eip = (unsigned long) ret_from_fork;
introduces an inconsistency between esp and esp0 before the task is run the
first time. esp0 is no longer the actual start of the stack, but 8 bytes
off.
This shows itself clearly in a scenario when a ptracer that is set to also
ptrace eventual children traces program1 which then clones thread1. Now
the ptracer wants to modify the registers of thread1. The x86 ptrace
implementation bases it's knowledge about saved user-space registers upon
p->thread.esp0. But this will be a few bytes off causing certain writes to
the kernel stack to overwrite a saved kernel function address making the
kernel when actually running thread1 jump out into user-space. Very
spectacular.
The testcase I've used is:
/* start with strace -f ./a.out */
#include <pthread.h>
#include <stdio.h>
void *do_thread(void *p)
{
for (;;);
}
int main()
{
pthread_t one;
pthread_create(&one, NULL, &do_thread, NULL);
for (;;);
return 0;
}
So, my solution is to instead of just adjusting esp0 that creates an
inconsitent state I adjust where the user-space registers are saved with -8
bytes. This gives us the wanted extra bytes on the start of the stack and
esp0 is now correct. This solves the issues I saw from the original
testcase from Mateusz Berezecki and has survived testing here. I think
this should go into -mm a round or two first however as there might be some
cruft around depending on pt_regs lying on the start of the stack. That
however would have broken with the first change too!
It's actually a 2-line diff but I had to move the comment of why the -8 bytes
are there a few lines up. Thanks to Zwane for helping me with this.
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Nicolas Pitre
This better express things, and should cover RMK's weird SMP toys.
Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This patch adds i18n support for make *config, allowing users to have the
config process in their own language.
No printk was harmed in the process, don't worry, so all the bug reports,
kernel messages, etc, remain in english, just the user tools to configure
the kernel are internationalized.
Users not interested in translations can just unset the related LANG,
LC_ALL, etc env variables and have the config process in plain english,
something like:
LANG= make menuconfig
is enough for having the whole config process in english. Or just don't
install any translation file.
Translations for brazilian portuguese are being done by a team of
volunteers at:
http://www.visionflex.inf.br/kernel_ptbr/pmwiki.php/Principal/Traducoes
To start the translation process:
make update-po-config
This will generate the pot template named scripts/kconfig/linux.pot,
copy it to, say, ~/es.po, to start the translation for spanish.
To test your translation, as root issue this command:
msgfmt -o /usr/share/locale/es/LC_MESSAGES/linux.mo ~/es.po
Replace "es" with your language code.
Then execute, for instance:
make menuconfig
The current patch doesn't use any optimization to reduce the size of the
generated .mo file, it is possible to use the config option as a key, but
this doesn't prevent the current patch from being used or the translations
done under the current scheme to be in any way lost if we chose to do any
kind of keying.
Thanks to Fabricio Vaccari for starting the pt_BR (brazilian portuguese)
translation effort, Thiago Maciera for helping me with the gconf.cc (QT
frontent) i18n coding and to all the volunteers that are already working on
the first translation, to pt_BR.
I left the question on whether to ship the translations with the stock kernel
sources to be discussed here, please share your suggestions.
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org
Signed-off-by: Andrew Morton <akpm@osdl.org>
Currently sparc and sparc64's UP cpu_idle() checks current pid. This
is old time legacy. Now it's paranoia.
Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org>
Acked-by: William Irwin <wli@holomorphy.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tg3_stop_block() errors can be safely ignored since tg3_chip_reset()
always follows tg3_stop_block() calls.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
this matches the API used by other link layer like ethernet or token
ring.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
The premise is that domain validation is likely to trigger errors which
it wants to know about, so the only time it should be retrying them is
when it gets a unit attention (likely as the result of a previous bus or
device reset). Ironically, the previous coding retried three times in
all cases except those of unit attention. The attached fixes this to do
the right thing.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This causes sk->sk_prot to change, which makes the socket
release free the sock into the wrong SLAB cache. Fix this
by introducing sk_prot_creator so that we always remember
where the sock came from.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
handling for unwritten extents can be moved out of interrupt context.
SGI Modid: xfs-linux:xfs-kern:22343a
Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Christoph Hellwig <hch@sgi.com>
Rather than using a long "depends on..." and "default y" lines for
these options, use select instead.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Various places in the ARM kernel implicitly assumed that kernel
stacks are always 8K due to hard coded constants. Replace these
constants with definitions.
Correct the allowable range of kernel stack pointer values within
the allocation. Arrange for the entire kernel stack to be zeroed,
not just the upper 4K if CONFIG_DEBUG_STACK_USAGE is set.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
With 2.6.11 and 2.6.12-rc2 (and perhaps a few versions before) usb
drivers for multi-interface devices, which do
usb_driver_release_interface() in their disconnect(), make rmmod hang.
It turns out to be due to a bug in drivers/base/bus.c:driver_detach(),
that iterates over the list of attached devices with
list_for_each_safe() under an assumption that device_release_driver()
only releases the current device, while it may also call
device_release_driver() for other devices on the same list.
The following patch fixes it. Please consider applying.
Signed-off-by: Roman Kagan <rkagan@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Earlier in the same function dev->bus is checked before dereferenced,
make consistent although I honestly don't know if dev->bus could
ever be NULL
Found by the Coverity tool
Signed-off-by: Alexander Nyberg <alexn@dsv.su.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Convert some sn SAL_CALLs to ia64_sal_oemcall calls so that they can be
called by kernel modules.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Remove the p_nodepda and p_subnodepda pointers from the pda_s structure.
And then define a new per-cpu pointer to the nodepda and export it so
that it can be accessed by kernel modules.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
[hv]sync[12] are __initdata, causing mplayer to oops with the previous i810fb fix.
My fault, this fixes it. Sorry.
Signed-off-by: Linux Torvalds <torvalds@osdl.org>
New file - asm-generic/signal.h. Contains declarations of
__sighandler_t, __sigrestore_t, SIG_DFL, SIG_IGN, SIG_ERR and default
definitions of SIG_BLOCK, SIG_UNBLOCK and SIG_SETMASK.
asm-*/signal.h switched to including it. The only exception is
asm-parisc/signal.h that wants its own declaration of __sighandler_t;
that one is left as-is.
asm-ppc64/signal.h required one more thing - unlike everybody else it
used __sigrestorer_t instead of usual __sigrestore_t. PPC64 switched to
common spelling.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* net/irda/irda_device.c::irda_setup_dma() made conditional on
ISA_DMA_API (it uses helpers in question and irda is usable on
platforms that don't have them at all - think of USB IRDA, for
example).
* irda drivers that depend on ISA DMA marked as dependent on
ISA_DMA_API
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Part of parport_pc that uses ISA DMA helpers made conditional on
CONFIG_ISA_DMA_API. As the result, driver got usable for boxen that do
not have ISA DMA stuff and have normal PCI parport card stuck into
them - these never use DMA anyway.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A bunch of drivers use ISA DMA helpers or their equivalents for
platforms that have ISA with different DMA controller (a lot of ARM
boxen). Currently there is no way to put such dependency in Kconfig -
CONFIG_ISA is not it (e.g. it is not set on platforms that have no ISA
slots, but have on-board devices that pretend to be ISA ones).
New symbol added - ISA_DMA_API. Set when we have functional
enable_dma()/set_dma_mode()/etc. set of helpers. Next patches in the
series will add missing dependencies for drivers that need them.
I'm very carefully staying the hell out of the recurring flamefest on
what exactly CONFIG_ISA would mean in ideal world - added symbol has a
well-defined meaning and for now I really want to treat it as completely
independent from the mess around CONFIG_ISA.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I fogot to remove the code that freed the memory in cleanup_slots().
Here is the new patch, which I have also taken care of the comment
by Eike to remove the cast in hotplug_slot->private.
Signed-off-by: Dely Sy <dely.l.sy@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch just adds Intel's Hance Rapid south bridge IDs to ICH4 region quirk.
Patch was successfuly tested by Chunhao Huang from Winbond.
Signed-Off-By: Rudolf Marek <r.marek@sh.cvut.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
here is the patch that fixes the bug introduced by my previous patch which
already went into 2.6.12-rc2 and is likely to cause trouble is someone hits
one the else case here by accident.
Using the &= operation before the if statement destroys the information the
if asks for so we always go into the else branch.
Signed-off-by: Rolf Eike Beer <eike-hotplug@sf-tec.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Now pci drivers can know when the system is going down without having to
add a reboot notifier event.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds the possibility to do word-aligned 16-bit atomic PCI
configuration space accesses via the sysfs PCI interface. As a result, problems
with Emulex LFPC on IBM PowerPC64 are fixed.
Patch is present in SLES 9 SP1.
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This fixes u32 vs. pm_message_t confusion in documentation, and
removes references to no-longer-existing (*save_state), too. With
exception of USB (I hope David will fix/apply my patch), this should
fix last piece of this confusion... famous last words.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
pci_find_slot() doesn't work on multiple-domain boxes so pci_get_slot()
should be used instead.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
I think 'is_enabled' flag in pci_dev structure should be set/cleared
when the device actually enabled/disabled. Especially about
pci_enable_device(), it can be failed. By this change, we will also
get the possibility of refering 'is_enabled' flag from the functions
called through pci_enable_device()/pci_disable_device().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
allow multiple aoe devices to have the same mac
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -u b/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
aoe-stat should work for built-in as well as module
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -uprN a/Documentation/aoe/status.sh b/Documentation/aoe/status.sh
Fixed problem where setting or retreiving the serial config would fail
with EPIPE. Removed CRTS toggling so the driver behaves more like other
usbserial adapters. Issued new interval of 1ms instead of the default
bInterval. As a result, transfer speed has been substantially
increased. From avg. 850bps to avg. 3300bps. Also added new module
parameter 'interval' to tweak the interval in case this change causes
problems for someone. Cleaned up code and formatting issues so source
is more readable. Replaced the C++ style comments. Various other code
cleanups.
Signed-off-by: Lonnie Mendez <lmendez19@austin.rr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch adds an unusual_devs entry for the Minolta Dimage Z10.
Originally reported by Vilisas <vilisas@xxx.lt>
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
[ftdi_sio] Replaced redundant INTERFACE_A and INTERFACE_B macros with
the equivalent PIT_SIOA and PIT_SIOB macros.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Some VID/PID updates for the ftdi_sio driver:
* The "Gude Analog- und Digitalsysteme GmbH" entries were missing from
the "combined" table.
* Replaced FTDI_8U232AM_ALT_ALT_PID with 3 PIDs for devices from
4n-galaxy.de.
* Removed redundant FTDI_RM_VID and renamed FTDI_RMCANVIEW_PID to
FTDI_RM_CANVIEW_PID.
* Added VID/PID for serial converter in Mobility Electronics EasiDock
USB 200 (mentioned by Gregory Schmitt).
* Added PID for Active Robots USB comms board (mentioned by John Koch).
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -ur a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
On Thu, Apr 14, 2005 at 11:06:21PM +0400, Sergey Vlasov wrote:
> http://thread.gmane.org/gmane.linux.usb.devel/32977
>
> (see "[PATCH] N/3 cdc acm errors").
>
> You also need this driver core fix:
>
> http://thread.gmane.org/gmane.linux.usb.devel/33132
I reproduced the same oops while trying to execute at+mode=99, it would
be nice to get these fix merged since I believe it's still needed to
connect the laptop over gprs (something I didn't test yet).
This further patch will allow you to connect via usbnet, Greg could you
apply? Thanks!
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Miscellaneous updates for EHCI.
- Mostly updates the power switching on EHCI controllers. One routine
centralizes the "power on/off all ports" logic, and the capability to
do that is reported more correctly.
- Courtesy Colin Leroy, a patch to always power up ports after resumes
which didn't keep a USB device suspended. The reset-everything logic
powers down those ports (on some hardware) so something needs to turn
them back on.
- Minor tweaks/bugfixes for the debug port support.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch fixes a compiler error caused by a missing prototype. It should
apply directly to Greg KH's usb-2.6.git tree.
Signed-off-by: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
There is some race whereby IRQs get stuck, the IRQ status
is pending but no processor actually handles the IRQ vector
and thus the interrupt.
This is a temporary workaround.
Signed-off-by: David S. Miller <davem@davemloft.net>
We would never advance the goal_cpu counter like we
should, so all IRQs would go to a single processor.
Signed-off-by: David S. Miller <davem@davemloft.net>
Long standing bug.
Policy to repeat an action never worked.
Signed-off-by: J Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
I found a bug that stopped IPsec/IPv6 from working. About
a month ago IPv6 started using rt6i_idev->dev on the cached socket dst
entries. If the cached socket dst entry is IPsec, then rt6i_idev will
be NULL.
Since we want to look at the rt6i_idev of the original route in this
case, the easiest fix is to store rt6i_idev in the IPsec dst entry just
as we do for a number of other IPv6 route attributes. Unfortunately
this means that we need some new code to handle the references to
rt6i_idev. That's why this patch is bigger than it would otherwise be.
I've also done the same thing for IPv4 since it is conceivable that
once these idev attributes start getting used for accounting, we
probably need to dereference them for IPv4 IPsec entries too.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix qlen underrun when doing duplication with netem. If netem is used
as leaf discipline, then the parent needs to be tweaked when packets
are duplicated.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Netem currently dumps packets into the queue when timer expires. This
patch makes work by self-clocking (more like TBF). It fixes a bug
when 0 delay is requested (only doing loss or duplication).
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Due to bugs in netem (fixed by later patches), it is possible to get qdisc
qlen to go negative. If this happens the CPU ends up spinning forever
in qdisc_run(). So add a BUG_ON() to trap it.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some network drivers call netif_stop_queue() when detecting loss of
carrier. This leads to packets being queued up at the qdisc level for
an unbound period of time. In order to prevent this effect, the core
networking stack will now cease to queue packets for any device, that
is operationally down (i.e. the queue is flushed and disabled).
Signed-off-by: Tommy S. Christensen <tommy.christensen@tpack.net>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
If we free up a partially processed packet because it's
skb->len dropped to zero, we need to decrement qlen because
we are dropping out of the top-level loop so it will do
the decrement for us.
Spotted by Herbert Xu.
Signed-off-by: David S. Miller <davem@davemloft.net>
- pfm_context_load(): change return value from EINVAL to EBUSY
when context is already loaded.
- pfm_check_task_state(): pass test if context state is MASKED.
It is safe to give access on PFM_CTX_MASKED because the PMU
state (PMD) is stable and saved in software state.
This helps multiplexing programs such as the example given
in libpfm-3.1.
Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The pmu_active test is based on the values of PSR.up. THIS IS THE PROBLEM as
it does not take into account the lazy restore logic which is as follow (simplified):
context switch out:
save PMDs
clear psr.up
release ownership
context switch in:
if (ctx->last_cpu == smp_processor_id() && ctx->cpu_activation == cpu_activation) {
set psr.up
return
}
restore PMD
restore PMC
ctx->last_cpu = smp_processor_id();
ctx->activation = ++cpu_activation;
set psr.up
The key here is that on context switch out, we clear psr.up and on context switch in
we check if nobody else used the PMU on that processor since last time we came. In
that case, we assume the PMD/PMC are ours and we simply reactivate.
The Caliper problem is that between the moment we context switch out and the moment we
come back, nobody effectively used the PMU BUT the processor went idle. Normally this
would have no incidence but PAL_HALT does alter the PMU registers. In default_idle(),
the test on psr.up is not strong enough to cover this case and we go into PAL which
trashed the PMU resgisters. When we come back we falsely assume that this is our state
yet it is corrupted. Very nasty indeed.
To avoid the problem it is necessary to forbid going to PAL_HALT as soon as perfmon
installs some valid state in the PMU registers. This happens with an application
attaches a context to a thread or CPU. It is not enough to check the psr/dcr bits.
Hence I propose the attached patch. It adds a callback in process.c to modify the
condition to enter PAL on idle. Basically, now it is conditional to pal_halt=1 AND
perfmon saying it is okay.
Signed-off-by: Tony Luck <tony.luck@intel.com>
The qlen should continue to decrement, even if we
pop partially processed SKBs back onto the receive queue.
Signed-off-by: David S. Miller <davem@davemloft.net>
Patch from Sascha Hauer
This patch adds the missing include files for the i.MX framebuffer
driver.
Signed-off-by: Sascha Hauer
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Let's recap the problem. The current asynchronous netlink kernel
message processing is vulnerable to these attacks:
1) Hit and run: Attacker sends one or more messages and then exits
before they're processed. This may confuse/disable the next netlink
user that gets the netlink address of the attacker since it may
receive the responses to the attacker's messages.
Proposed solutions:
a) Synchronous processing.
b) Stream mode socket.
c) Restrict/prohibit binding.
2) Starvation: Because various netlink rcv functions were written
to not return until all messages have been processed on a socket,
it is possible for these functions to execute for an arbitrarily
long period of time. If this is successfully exploited it could
also be used to hold rtnl forever.
Proposed solutions:
a) Synchronous processing.
b) Stream mode socket.
Firstly let's cross off solution c). It only solves the first
problem and it has user-visible impacts. In particular, it'll
break user space applications that expect to bind or communicate
with specific netlink addresses (pid's).
So we're left with a choice of synchronous processing versus
SOCK_STREAM for netlink.
For the moment I'm sticking with the synchronous approach as
suggested by Alexey since it's simpler and I'd rather spend
my time working on other things.
However, it does have a number of deficiencies compared to the
stream mode solution:
1) User-space to user-space netlink communication is still vulnerable.
2) Inefficient use of resources. This is especially true for rtnetlink
since the lock is shared with other users such as networking drivers.
The latter could hold the rtnl while communicating with hardware which
causes the rtnetlink user to wait when it could be doing other things.
3) It is still possible to DoS all netlink users by flooding the kernel
netlink receive queue. The attacker simply fills the receive socket
with a single netlink message that fills up the entire queue. The
attacker then continues to call sendmsg with the same message in a loop.
Point 3) can be countered by retransmissions in user-space code, however
it is pretty messy.
In light of these problems (in particular, point 3), we should implement
stream mode netlink at some point. In the mean time, here is a patch
that implements synchronous processing.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Here is a little optimisation for the cb_lock used by netlink_dump.
While fixing that race earlier, I noticed that the reference count
held by cb_lock is completely useless. The reason is that in order
to obtain the protection of the reference count, you have to take
the cb_lock. But the only way to take the cb_lock is through
dereferencing the socket.
That is, you must already possess a reference count on the socket
before you can take advantage of the reference count held by cb_lock.
As a corollary, we can remve the reference count held by the cb_lock.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
htb_enqueue(): Free skb and return NET_XMIT_DROP if a packet is
destined for the direct_queue but the direct_queue is full. (Before
this: erroneously returned NET_XMIT_SUCCESS even though the packet was
not enqueued)
Signed-off-by: Asim Shankar <asimshankar@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
kfree() and vfree() can both deal with NULL pointers. This patch removes
redundant NULL pointer checks from the ppp code in drivers/net/
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This is a trivial fix for a typo on Kconfig, where the Generic Random Early
Detection algorithm is abbreviated as RED instead of GRED.
Signed-off-by: Lucas Correia Villa Real <lucasvr@gobolinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
kfree(0) is perfectly valid, checking pointers for NULL before calling
kfree() on them is redundant. The patch below cleans away a few such
redundant checks (and while I was around some of those bits I couldn't
stop myself from making a few tiny whitespace changes as well).
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Acked-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Converts remaining rtnetlink_link tables to use c99 designated
initializers to make greping a little bit easier.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Converts rtm_min and rtm_max arrays to use c99 designated
initializers for easier insertion of new message families.
RTM_GETMULTICAST and RTM_GETANYCAST did not have the minimal
message size specified which means that the netlink message
was parsed for routing attributes starting from the header.
Adds the proper minimal message sizes for these messages
(netlink header + common rtnetlink header) to fix this issue.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
RTM_MAX is currently set to the maximum reserverd message type plus one
thus being the cause of two bugs for new types being assigned a) given the
new family registers only the NEW command in its reserved block the array
size for per family entries is calculated one entry short and b) given the
new family registers all commands RTM_MAX would point to the first entry
of the block following this one and the rtnetlink receive path would accept
a message type for a nonexisting family.
This patch changes RTM_MAX to point to the maximum valid message type
by aligning it to the start of the next block and subtracting one.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Converts xfrm_msg_min and xfrm_dispatch to use c99 designated
initializers to make greping a little bit easier. Also replaces
two hardcoded message type with meaningful names.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Makes the type > XFRM_MSG_MAX check behave correctly to
protect access to xfrm_dispatch.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch includes net/ipv6.h from addrconf.h since it needs
ipv6_addr_set.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
I made a mistake in my last patch to the raw socket checksum code.
I used the value of inet->cork.length as the length of the payload.
While this works with normal packets, it breaks down when IPsec is
present since the cork length includes the extension header length.
So here is a patch to fix the length calculations.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch "MCA recovery improvements" added do_exit to mca_drv.c.
That's fine when the mca recovery code is built in the kernel
(CONFIG_IA64_MCA_RECOVERY=y) but breaks building the mca recovery
code as a module (CONFIG_IA64_MCA_RECOVERY=m).
Most users are currently building this as a module, as loading
and unloading the module provides a very convenient way to turn
on/off error recovery.
This patch exports do_exit, so mca_drv.c can build as a module.
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
Correct a bug where tioca_dma_mapped() is putting tioca dma map structs
on the wrong list.
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
When SAL calls back into the OS, the OS code is running with preempt
disabled so it cannot call sleeping functions.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Jack Steiner uncovered some opportunities for improvement in
the MCA recovery code.
1) Set bsp to save registers on the kernel stack.
2) Disable interrupts while in the MCA recovery code.
3) Change the way the user process is killed, to avoid
a panic in schedule.
Testing shows that these changes make the recovery code much
more reliable with the 2.6.12 kernel.
Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Attached is a patch against David's audit.17 kernel that adds checks
for the TIF_SYSCALL_AUDIT thread flag to the ia64 system call and
signal handling code paths. The patch enables auditing of system
calls set up via fsys_bubble_down, as well as ensuring that
audit_syscall_exit() is called on return from sigreturn.
Neglecting to check for TIF_SYSCALL_AUDIT at these points results in
incorrect information in audit_context, causing frequent system panics
when system call auditing is enabled on an ia64 system.
I have tested this patch and have seen no problems with it.
[Original patch from Amy Griffis ported to current kernel by David Woodhouse]
From: Amy Griffis <amy.griffis@hp.com>
From: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Andi noted that during normal runtime cpu_idle_map is bounced around a lot,
and occassionally at a higher frequency than the timer interrupt wakeup
which we normally exit pm_idle from. So switch to a percpu variable.
I didn't move things to the slow path because it would involve adding
scheduler code to wakeup the idle thread on the cpus we're waiting for.
Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The following patch fixes a bug in the SGI Altix sn_dma_flush code.
sn_dma_flush is broken in 2.6. The code isn't waiting for the DMA
data to be flushed out of the PIC ASIC. This patch is based off the
linux-ia64-test-2.6.12 tree
Signed-off-by: Mike Habeck <habeck@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch simplifies a couple places where we search for _PXM
values in ACPI namespace. Thanks,
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The following patch ensures that the correct error interrupt handling
routine is initialized. This patch is based on the 2.6.12 ia64 release tree.
Signed-off-by: Colin Ngam <cngam@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch detects the existence of an uncached physical AMO address setup
by EFI's XPBOOT (SGI) and converts it to an uncached virtual AMO address.
Depends on a patch submitted on 23 March 2005 with the subject of:
[PATCH 2/3] SGI Altix cross partition functionality (2nd revision)
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch contains the cross partition pseudo-ethernet driver (XPNET)
functional support module.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch contains the communication module (XPC) for cross partition
communication on a partitioned SGI Altix.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
cg-patch couldn't apply the patch to Makefile, and my dumb script
rushed on and ran cg-commit without this change.
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch contains the shim module (XP) which interfaces between the
communication module (XPC) and the functional support modules (like XPNET).
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Export node_online_map and node_possible_map so that kernel modules can use
the nodemask macros, like, for_each_node() and for_each_online_node().
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Another step in the effort to eliminate the SN pda structure.
This patch moves the cnodeid_to_nasid_table field out of the pda,
making it a standalone per-cpu data item, and exports it so it can
be accessed by kernel modules.
Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Here is a patch to enable the SGI tiocx bus driver to distingush between
FPGA-attached h/w and non-FPGA-attached h/w.
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This is a one-liner to make the mbcs driver depend on SGI_TIOCX in the
drivers/char/Kconfig file.
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Hi Tony,
This patch against ia64-test-2.6.12 fixes a bug where the tiocx code
was inadvertently un-doing some address modifications done in earlier
fixup code. This patch just removes the offending code.
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This is a small patch to switch fluch_icache_range() to use fc.i
instead of fc. This would save time on processors which can establish
i-cache coherency without flushing the cache-line out to memory (not
that any current processors do). On existing processors, fc.i behaves
like fc. The only caveat is that very old assemblers may not know
about fc.i yet.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch cleans up include/asm/sn/shubio.h by removing a ton of
whitespaces and running it through Lindent, reducing it's size by almost
30KB. No actual content has been changed.
Signed-off-by: Jes Sorensen <jes@wildopensource.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch makes Jes' patch (which also contains the removal of fetchop.h) a
bit smaller, and removes two other unused files at the same time, sndrv.h and
sn_fru.h.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch below fixes 3 trivial typos which are caught by the new
assembler (v2.169.90). Please apply.
[Note: fix to memcpy that was also part of this patch was separately
applied from patches by H.J. and Andreas ... so the delta here only
has the other two fixes. -Tony]
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The current ia64 assembler complains about mismatching .proc/.endp pairs.
(Same patch also sent by H.J. Lu)
Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Now that we have MC/MT detection patches in, appended patch allows us to
configure MT scheduler optimizations. For now, we will this option off
by default.
There is some discussion going on lkml about setting up sched-domains
which are absolutely needed (like for example, we shouldn't setup SMT domain
for non MT processors). Once that patch goes in, we can enable this option by
default.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
gcc-4.0 generates altivec code implicitly when -mcpu indicates an
altivec capable CPU which is not suitable for the kernel. However, we
used to set -mcpu=970 when CONFIG_ALTIVEC was set because a gcc-3.x bug
prevented from using -maltivec along with -mcpu=power4, thus prevented
building the RAID6 altivec code.
This patch fixes all of this by testing for the gcc version. If 4.0 or
later, just normally use -mcpu=power4 and let the RAID6 code add
-maltivec to the few files it needs to be compiled with altivec support.
For 3.x, we still use -mcpu=970 to work around the above problem, which
is fine as 3.x will never implicitly generate altivec code.
The Makefile hackery may not be the most lovely, I welcome anybody more
skilled than me to improve it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When adding more formatted audit data to an skb for delivery to userspace,
the kernel will attempt to reuse an skb that has spare room. However, if
the audit message has already been fragmented to multiple skb's, the search
for spare room in the skb uses the head of the list. This will corrupt the
audit message with trailing bytes being placed midway through the stream.
Fix is to look at the end of the list.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
VMALLOC_START and VMALLOC_OFFSET are common between all ARM
machine classes. Move them into include/asm-arm/pgtable.h,
but allow a machine class to override them if required.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Rather than duplicate the assembly for debug macros in the
decompressor head.S, use asm/arch/debug-macros.S instead.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
This patch is for -mm only. It should probably be included in git-audit,
and should be forwarded to Linus iff git-audit is.
It updates the audit-syscall-{entry,exit} calls to current -mm.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Modify xtSearch so that it returns the next allocated block when the
requested block is unmapped. This can be used to make sure we don't
create a new extent that overlaps the next one.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds jfs_syncpt, which calls lmLogSync to write sync points
to the journal both in jfs_sync_fs and when sync barrier processing
completes.
lmLogSync accomplishes two things: 1) it pushes logged-but-dirty
metadata pages to disk, and 2) it writes a sync record to the journal
so that jfs_fsck doesn't need to replay more transactions than is
necessary.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
jfs has never worked on architecutures where the page size was not 4K.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
JFS code has always assumed a page size of 4K. This patch fixes the
non-pagecache uses of pages to deal with larger pages.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
JFS was creating a new IAG (inode aggregate group) in one address
space, and afterwards, accessing it from another. This could lead to
complications when cache pages contain more than one page of jfs
metadata. This patch causes the IAG to be initialized in the same
address space that it is subsequently accessed with.
This also elimitates an I/O, but IAG's aren't created too often.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use an inline pxd list rather than an xad list in the xadlock.
When the number of extents being modified can fit with the xadlock,
a transaction can be committed asynchronously. Using a list of
pxd's instead of xad's allows us to fit 4 extents, rather than 2.
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The cpufreq core patch I sent earlier got only half-applied. I added a
flag to let the low level driver disable an annoying warning on
suspend/resume that is normal on ppc, but the "resume" part of it wasn't
applied.
This just adds back that missing bit. The original patch also reworked
the resume() function to avoid nesting too many if () statements along
the way I did the suspend() one, but I didn't include that in the patch
below.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The clock spreading disable/enable code was called to late/early during
the suspend/resume code on some laptops and would trigger a
might_sleep() warning due to the down() call in the low level i2c code.
This fixes it by calling those functions earlier/later when interrupts
are still enabled.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
As Al Viro noticed, my previous fix missed one instance of "device" in
the driver local debug code. Harmless unless you tweak the #define's in
there but still work fixing.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A typo in the machine table incorrectly mark the 101 PowerBook as
needing explicit callback from the video driver to enable sleep mode. I
did not implement that mecanism for chipsest older than r128, so we need
to mark this machine as always beeing able to sleep for now.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
My newer iMac mini driver doesn't build with verbose debug enabled.
This fixes it, and removes an erroneous error printk (since it's normal
on some machine to not find some gpios on the "first try").
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We are experiencing a problem when flushing the CPU caches before sleep
on some laptop models using the 750FX CPU rev 1.X. While I haven't been
able to figure out a proper explanation for what's going on, I do have a
workaround that seem to work reliably and allows those machine to sleep
and wakeup properly again.
I'll re-update that code if/when I ever find exactly what is happening
with those CPU revisions.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
scsi_dispatch_cmd currently calls scsi_done when the device is in the
SDEV_DEL state, but at this point the command has not had a timer added
to it (this is done a couple lines down) so scsi_done just returns and
the command is lost. The attached patch made against 2.6.12-rc3 calls
__scsi_done in this case so the comamnd will be returned upwards.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Only issue a cdrom cache flush if we've done write to the drive. The
->media_written() flag keeps track of that.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes an array overflow found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes an array overflow found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes an array overflow found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes an array overflow found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes an array overflow found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Another large rollup of various patches from Adrian which make things static
where they were needlessly exported.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The patch updates the documentation for /proc. super-nr and super-max have
been dropped from the kernel since 2.4.9 due to minor numbering issues.
This change was not documented in the documentation.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We have at least two users which were confused by these messages, myself
included.
Signed-off-by: Alexey Dobriyan <adobriyan@mail.ru>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The start page for each book has changed from book1.html to index.html.
Update our generated links acocrdingly.
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
With the custom stylesheet, functions are rendered using ANSI-C syntax and
xmlto is a bit quieter.
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
xmlto uses standared XSLT templates to generate manpages, (x)html pages, and
XML FO files which can be processed with passivetex. This is much faster than
using jadetex for everything. This patch also reduces the number of
kernel-specific scripts that are needed to generate documentation.
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
As the author of tulip-user and via-audio docbooks, I can say that they are
out of date and should be deleted.
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some KernelDoc descriptions are updated to match the current code.
No code changes.
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I have recompiled Linux kernel 2.6.11.5 documentation for me and our
university students again. The documentation could be extended for more
sources which are equipped by structured comments for recent 2.6 kernels. I
have tried to proceed with that task. I have done that more times from 2.6.0
time and it gets boring to do same changes again and again. Linux kernel
compiles after changes for i386 and ARM targets. I have added references to
some more files into kernel-api book, I have added some section names as well.
So please, check that changes do not break something and that categories are
not too much skewed.
I have changed kernel-doc to accept "fastcall" and "asmlinkage" words reserved
by kernel convention. Most of the other changes are modifications in the
comments to make kernel-doc happy, accept some parameters description and do
not bail out on errors. Changed <pid> to @pid in the description, moved some
#ifdef before comments to correct function to comments bindings, etc.
You can see result of the modified documentation build at
http://cmp.felk.cvut.cz/~pisa/linux/lkdb-2.6.11.tar.gz
Some more sources are ready to be included into kernel-doc generated
documentation. Sources has been added into kernel-api for now. Some more
section names added and probably some more chaos introduced as result of quick
cleanup work.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Martin Waitz <tali@admingilde.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Attached is a patch against 2.6.11.7 which tidies up the tdfxfb framebuffer
size detection code a little and fixes the broken support for Voodoo4/5
cards. (I haven't tested this on a Voodoo5, however, because I don't have
the hardware).
Signed-off-by: Richard Drummond <evilrich@rcdrummond.net>
Cc: <linux-fbdev-devel@lists.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Improve the PLL frequency matching in the tdfxfb driver. Instead of
requiring 64260 iterations to obtain the closest supported PLL frequency,
this code does it with the same degree of accuracy in at most 768
iterations.
Signed-off-by: Richard Drummond <evilrich@rcdrummond.net>
Cc: <linux-fbdev-devel@lists.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds support for the framebuffer on the freescale i.MX SOC
architecture. The driver has been tested on the mx1ads board, the pimx1 board
and another custom board with different displays.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ingo Oeser noticed that all that intelfbdrv.h contains are prototypes for
static functions - and such prototypes don't belong into header files.
This patch therefore removes drivers/video/intelfb/intelfbdrv.h and moves the
prototypes to intelfbdrv.c .
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a check after use found by the Coverity checker.
Signed-off-by: Adrian Bunk <bunk@fs.tum.de>
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Add 'vram' option to specify amount of video RAM to remap
- Limit remap size to 64 MIB
- Use info->screen_size for remapped RAM
- Fix misplaced label in failure path
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds to the fbdev interface a set_cmap callback that allow the
driver to "batch" palette changes. This is useful for drivers like
radeonfb which might require lenghtly workarounds on palette accesses, thus
allowing to factor out those workarounds efficiently.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arm the read timeout timer before the first read.
Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Small mods for setting up the uart - parity, flow control
Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Set the timeout and threshold to better values.
Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Allow hardware flow control to be set from an ioctl.
Signed-off-by: Patrick Gefre <pfg@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add device table support for the LR214WF card.
The driver will say it's a FlyTV, simply because the name strings are
stored with the card design data, not the device ID data.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The extra race-with-truncate-then-retry logic around
ext3_get_block_handle(), which was inherited from ext2, becomes unecessary
for ext3, since we have already obtained the ei->truncate_sem in
ext3_get_block_handle() before calling ext3_alloc_branch(). The
ei->truncate_sem is already there to block concurrent truncate and block
allocation on the same inode. So the inode's indirect addressing tree
won't be changed after we grab that semaphore.
We could, after get the semaphore, re-verify the branch is up-to-date or
not. If it has been changed, then get the updated branch. If we still
need block allocation, we will have a safe version of the branch to work
with in the ext3_find_goal()/ext3_splice_branch().
The code becomes more readable after remove those retry logic. The patch
also clean up some gotos in ext3_get_block_handle() to make it more
readable.
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
msp3400 update: Fix and enable "simpler" mode, some other minor fixes.
Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
update cx22702 fe driver, add support for using the dvb pll lib, enable
cx22702 support in cx88-dvb.
Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fixup error path, without that one the driver kills the machine by oopsing
in the IRQ handler in case the frontend initialization fails.
Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Since we only access reiserfs_key ->u.k_offset_v2 guts in four helper
functions, we are free to sanitize those, as long as
- layout of the structure is unchanged (it's on-disk object)
- behaviour of these helpers is same as before.
Patch kills the mess with endianness-dependent bitfields and replaces them
with a single __le64. Helpers are switched to straightforward shift/and/or.
Benefits:
- exact same definitions for little- and big-endian architectures; no ifdefs
in sight.
- generate the same code on little-endian and improved on big-endian.
- doesn't rely on lousy bitfields handling in gcc codegenerator.
- happens to be standard C (unsigned long long is not a valid type for a
bitfield; it's a gccism and not well-implemented one, at that).
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
comp_short_keys() massaged into sane form, which kills the last place where
pointer to in_core_key (or any object containing such) would be cast to or
from something else. At that point we are free to change layout of
in_core_key - nothing depends on it anymore.
So we drop the mess with union in there and simply use (unconditional) __u64
k_offset and __u8 k_type instead; places using in_core_key switched to those.
That gives _far_ better code than current mess - on all platforms.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
struct reiserfs_key cloned; (currently) identical struct in_core_key added.
Places that expect host-endian data in reiserfs_key switched to in_core_key.
Basically, we get annotation of reiserfs_key users and keep the resulting tree
obviously equivalent to original.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Bump autofs4 version so we know what's going on.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
For tree mount maps, a call to chdir or chroot, to a directory above the
moint point directories at a certain time during the expire results in the
expire incorrectly thinking the tree is not busy. This patch adds a check
to see if the filesystem above the tree mount points is busy and also locks
the filesystem during the tree mount expire to prevent the race.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It's possible for an event wait request to arive before the event
requestor. If this happens the daemon never gets notified and autofs
hangs.
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes the leak of sb->s_fs_info in both the HFS and HFS+
modules. In addition to this, it fixes an oops happening when trying to
mount a non-hfsplus filesystem using hfsplus. This patch is from Roman
Zippel, based off patches sent by myself.
Signed-off-by: Colin Leroy <colin@colino.net>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch optimizes io_submit_one to call aio_run_iocb() directly if
ctx->run_list is empty. When the list is empty, the operation of adding to
the list, then call to __aio_run_iocbs() is unnecessary because these
operations are done in one atomic step. ctx->run_list always has only one
element in this case. This optimization speeds up industry standard db
transaction processing benchmark by 0.2%.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Clean up code that was previously used for debug purpose. Remove aio_run,
aio_wakeups, iocb->ki_queued and iocb->ki_kicked. Also clean up unused
variable count in __aio_run_iocbs() and debug code in read_events().
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Since the tail pointer in aio_ring structure never wrap ring size more than
once, so a simple compare is sufficient to wrap the index around. This avoid
a more expensive mod operation.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes superfluous kiocb member initialization in the AIO
allocation and deallocation path. For example, in really_put_req(),
right before kiocb is returned to slab, 5 variables are reset to NULL.
The same variables will be initialized at the kiocb allocation time,
so why bother reset them knowing that they will be set to valid data
at alloc time? Another example: ki_retry is initialized in __aio_get_req,
but is initialized again in io_submit_one.
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Suparna Bhattacharya <suparna@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I've noticed that, starting from linux-2.6.12-rc1, in the top Makefile the
"cmd_tags" variable has been changed in a way incompatible with *emacs
ctags. Since the "--extra" option exists only in "exuberant ctags", it
should be included in the CTAGSF shell variable.
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch reduces the stack usage of the function serial_event() in
serial_cs from 2212 to 228. I used a patched version of gcc 3.4.3 on i386
with -fno-unit-at-a-time disabled.
This patch is only compile tested.
Acked-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Yum Rayan <yum.rayan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Convert most of the current code that uses _NSIG directly to instead use
valid_signal(). This avoids gcc -W warnings and off-by-one errors.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds a new function valid_signal() that tests if its argument is
a valid signal number.
The reasons for adding this new function are:
- some code currently testing _NSIG directly has off-by-one errors.
Using this function instead avoids such errors.
- some code currently tests unsigned signal numbers for <0 which is
pointless and generates warnings when building with gcc -W. Using this
function instead avoids such warnings.
I considered various places to add this function but eventually settled on
include/linux/signal.h as the most logical place for it. If there's some
reason this is a bad choice then please let me know (hints as to a better
location are then welcome of course).
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Correct an issue with the IPMI message layer taking a lock and calling
lower layer driver. If an error occrues at the lower layer the lock can be
taken again causing a deadlock. The lock is released before calling the
lower layer.
Signed-off-by: David Griego <dgriego@mvista.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Enable interrupts for a BT interface. There is a specific register that
needs to be set up to enable interrupts that also must be modified to clear
the irq.
Also, don't reset the BMC on a BT interface. That's probably not a good
idea as the BMC may be performing other important functions and a reset
should only be a last resort. Also, that register is also used to
enable/disable interrupts to the BT; modifying it may screw up the
interrupts.
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If there is an unexpected close, still allow the watchdog interface to be
re-opened on the IPMI watchdog.
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If the ACPI register bit width is zero (an invalid value) assume it is the
default spacing. This avoids some coredumps on invalid data and makes some
systems work that have broken ACPI data.
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ignore the bottom bit of the base address from the DMI data. It is
supposed to be set to 1 if it is I/O space. Few systems do this, but this
enables the ones that do set it to work properly.
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Documentation/dontdiff is a little messy. Here is a patch to sort the
content of that file in alphabetical
Signed-off-by: Nguyen Anh Quynh <aquynh@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes segmentation fault when specifying bad journal device via
a mount option.
Don't pass a zero pointer to bdevname() if filp_open() returns error.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The variable attributes "packed" and "align" when used with struct, should
have the following order:
struct ... {...} __attribute__((packed)) var;
This patch fixes few instances where the variable and attributes are placed
the other way around and had no effect.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There were still a few comments left refering to verify_area, and two
functions, verify_area_skas & verify_area_tt that just wrap corresponding
access_ok_skas & access_ok_tt functions, just like verify_area does for
access_ok - deprecate those.
There was also a few places that still used verify_area in commented-out
code, fix those up to use access_ok.
After applying this one there should not be anything left but finally
removing verify_area completely, which will happen after a kernel release
or two.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Discussing with Matthew Wilcox some of his outstanding patches lead me to
this patch (among others).
The preamble in struct sigevent can be expressed independently of the
architecture.
Also use __ARCH_SI_PREAMBLE_SIZE on ia64.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I recently realized that the in-kernel copy of hangcheck-timer was quite
stale. Here's the latest. It adds support for s390, ppc64, and ia64 too.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When allocating a new VC with vgacon_init(), the font is shared across all
the VGA consoles. However, the font mask was always set to the default
value of zero in visual_init(), even if we were using 512 character fonts
at the time.
Moreover, code in vgacon.c:vga_do_font_op() didn't reset the mask if the
console driver thinks it's already in 512 character mode. This means that
to *fix* it, you'd actually have to take the console out of 512 character
mode and then set it back.
The attached sets vc_hi_font_mask in vgacon_init() for any new consoles
opened if the vgacon driver is already in 512 character mode, solving this.
This bug goes back to 2.4.18 at least, probably earlier.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Allow rewriting of a file and extending a file upto the end of the
allocated block on a full filesystem.
From: Chris Mason <mason@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patches adds the "nbds_max" parameter to the nbd kernel module, which
limits the number of nbds allocated. Previously, always all 128 entries
were allocated unconditionally, which used to waste resources and
needlessly flood the hotplug system with events. (Defaults to 16 now.)
Signed-off-by: Lars Marowsky-Bree <lmb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add EOWNERDEAD and ENOTRECOVERABLE to all architectures. This is to
support the upcoming patches for robust mutexes.
We normally don't reserve parts of the name/number space for external
patches, but robust mutexes are sufficiently popular and important to
justify it in this case.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Profiling hit rates on merging shows that the last merge hint works
extremely well for most work loads. So lets kill the linear merge scan in
noop-iosched, so it provides O(1) run time for any operation.
Testing credits go to Ken Chen from Intel.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
kallsyms does not consider SYMBOL_PREFIX of C. Consequently it does not
work on architectures using that prefix character (h8300, v850).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is take two of a patch that should have appeared two days ago, before
yesterday's "remote control" patch for the same card.
This patch sets unconnected GPIO to Output to keep them from floating (just
good driver writing practice, being nice to the chip), and uses GPIO16 to
switch TV vs. FM - this pin switches inputs onto the tuner, as well as the
audio output from the tuner into the 7135 SIF input. Consequently, FM
radio support is being un-commented because it's now working (sort of, see
below).
These two patches get the card almost fully operational; there appears to
be a bug in tda8290.c remaining that puts an offset onto the tuned
frequency in FM radio mode. We're investigating.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Subject says it ... this card's IR microcontroller design and attachment
are compatible to the company's previous designs, so the patch was as
simple as it gets.
DESC
LifeView FlyTV Platinum FM: GPIO usage
EDESC
From: Peter Missel <peter.missel@onlinehome.de>
This is take two of a patch that should have appeared two days ago, before
yesterday's "remote control" patch for the same card.
This patch sets unconnected GPIO to Output to keep them from floating (just
good driver writing practice, being nice to the chip), and uses GPIO16 to
switch TV vs. FM - this pin switches inputs onto the tuner, as well as the
audio output from the tuner into the 7135 SIF input. Consequently, FM
radio support is being un-commented because it's now working (sort of, see
below).
These two patches get the card almost fully operational; there appears to
be a bug in tda8290.c remaining that puts an offset onto the tuned
frequency in FM radio mode. We're investigating.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It's trivial for the resize option to auto-get the underlying device size,
while it's harder for the user. I've copied the code from jfs.
Since of the different reiserfs option parser (which does not use the
superior match_token used by almost every other filesystem), I've had to
use the "resize=auto" and not "resize" option to specify this behaviour.
Changing the option parser to the kernel one wouldn't be bad but I've no
time to do this cleanup in this moment.
Btw, the mount(8) man page should be updated to include this option. Cc
the relevant people, please (I hope I cc'ed the right people).
Cc: <reiserfs-dev@namesys.com>
Cc: <reiserfs-list@namesys.com>
Cc: <mtk-manpages@gmx.net>
Cc: Alex Zarochentsev <zam@namesys.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Update the RCU documentation to allow for the new synchronize_rcu() and
synchronize_sched() primitives. Fix a few other nits as well.
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch changes calls to synchronize_kernel(), deprecated in the earlier
"Deprecate synchronize_kernel, GPL replacement" patch to instead call the new
synchronize_rcu() and synchronize_sched() APIs.
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The synchronize_kernel() primitive is used for quite a few different purposes:
waiting for RCU readers, waiting for NMIs, waiting for interrupts, and so on.
This makes RCU code harder to read, since synchronize_kernel() might or might
not have matching rcu_read_lock()s. This patch creates a new
synchronize_rcu() that is to be used for RCU readers and a new
synchronize_sched() that is used for the rest. These two new primitives
currently have the same implementation, but this is might well change with
additional real-time support. Both new primitives are GPL-only, the old
primitive is deprecated.
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a deprecated_for_modules macro that allows symbols to be deprecated only
when used by modules, as suggested by Andrew Morton some months back.
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The gpl exports need to be put back. Moving them to GPL -- but in a
measured manner, as I proposed on this list some months ago -- is fine.
Changing these particular exports precipitously is most definitely -not-
fine. Here is my earlier proposal:
http://marc.theaimsgroup.com/?l=linux-kernel&m=110520930301813&w=2
See below for a patch that puts the exports back, along with an updated
version of my earlier patch that starts the process of moving them to GPL.
I will also be following this message with RFC patches that introduce two
(EXPORT_SYMBOL_GPL) interfaces to replace synchronize_kernel(), which then
becomes deprecated.
Signed-off-by: <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The current logic assumes that a /proc/<PID>/task directory should have a
hardlink count of 3, probably counting ".", "..", and a directory for a
single child task.
It's fairly obvious that this doesn't work out correctly when a PID has
more than one child task, which is quite often the case.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The pid directories in /proc/ currently return the wrong hardlink count - 3,
when there are actually 4 : ".", "..", "fd", and "task".
This is easy to notice using find(1):
cd /proc/<pid>
find
In the output, you'll see a message similar to:
find: WARNING: Hard link count is wrong for .: this may be a bug in your
filesystem driver. Automatically turning on find's -noleaf option.
Earlier results may have failed to include directories that should have
been searched.
http://bugs.gentoo.org/show_bug.cgi?id=86031
I also noticed that CONFIG_SECURITY can add a 5th: attr, and performed a
similar fix on the task directories too.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The attached patch moves the IRQ-related SA_xxx flags (namely, SA_PROBE,
SA_SAMPLE_RANDOM and SA_SHIRQ) from all the arch-specific headers to
linux/signal.h. This looks like a left-over after the irq-handling code
was consolidated. The code was moved to kernel/irq/*, but the flags are
still left per-arch.
Right now, adding a new IRQ flag to the arch-specific header, like this
patch does:
http://cvs.sourceforge.net/viewcvs.py/*checkout*/alsa/alsa-driver/utils/patches/pcsp-kernel-2.6.10-03.diff?rev=1.1
no longer works, it breaks the compilation for all other arches, unless you
add that flag to all the other arch-specific headers too. So I think such
a clean-up makes sense.
Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Arrange for all kernel printks to be no-ops. Only available if
CONFIG_EMBEDDED.
This patch saves about 375k on my laptop config and nearly 100k on minimal
configs.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove PAGE_BUG - repalce it with BUG and BUG_ON.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch eliminates all kernel BUGs, trims about 35k off the typical
kernel, and makes the system slightly faster.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a pair of rlimits for allowing non-root tasks to raise nice and rt
priorities. Defaults to traditional behavior. Originally written by
Chris Wright.
The patch implements a simple rlimit ceiling for the RT (and nice) priorities
a task can set. The rlimit defaults to 0, meaning no change in behavior by
default. A value of 50 means RT priority levels 1-50 are allowed. A value of
100 means all 99 privilege levels from 1 to 99 are allowed. CAP_SYS_NICE is
blanket permission.
(akpm: see http://www.uwsg.iu.edu/hypermail/linux/kernel/0503.1/1921.html for
tips on integrating this with PAM).
Signed-off-by: Matt Mackall <mpm@selenic.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The ioctl32_conversion routines will be deprecated: Remove them from the
crypto driver.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The ioctl32_conversion routines will be deprecated: Remove them from dasd_cmb
and handle the three cmb ioctls like all other dasd ioctls.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The first blocks on a cdl formatted dasd device are smaller than the blocksize
of the device. Read requests are padded with a 'e5' pattern. Write requests
should not pad the (user) buffer with 'e5' because a write request is not
allowed to modify the buffer.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The DASD device driver never reorders the I/O requests and relies on the
hardware to write all data to nonvolatile storage before signaling a
successful write. Hence, the only thing we have to do to support write
barriers is to set the queue ordered flag.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The independent read-only flags in devmap, dasd_device and gendisk are not
kept in sync. Use one bit per feature in the dasd driver and keep that bit in
sync with the gendisk bit.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The current limitation of 16 characters of the debug feature names turned out
to be insufficient. Increase it to 64 characters.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
An arbitrary guest must not be allowed to trigger cmm actions. Only one
specific guest namely the one that serves as the resource monitor may send cmm
messages. Add a parameter that allows to specify the guest that may send
messages. z/VMs resource manager has the name 'VMRMSVM' which is the default.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Provide an easy way to define a non-zero storage key at compile time. This is
useful for debugging purposes.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The memory setup didn't take care of memory holes and this makes the memory
management think there would be more memory available than there is in
reality. That causes the OOM killer to kill processes even if there is enough
memory left that can be written to the swap space.
The patch fixes this by using free_area_init_node with an array of memory
holes instead of free_area_init. Further the patch cleans up the code in
setup.c by splitting setup_arch into smaller pieces.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix overflow in calculation of the new tod value in stop_hz_timer and fix
wrong virtual timer list idle time in case the virtual timer is already
expired in stop_cpu_timer.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use the set_disk_ro() API when the backing file is read-only, to mark the disk
read-only, during the ->open(). The current hack does not work when doing a
mount -o remount.
Also, mark explicitly the code paths which should no more be triggerable (I've
removed the WARN_ON(1) things). They should actually become BUG()s probably
but I'll avoid that since I'm not so sure the change works so well. I gave it
only some limited testing.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
CC: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add some commentary about UML internals, for a strange trick.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use this:
.set_page_dirty = __set_page_dirty_nobuffers,
We already dropped the inclusion of <linux/buffer_head.h>, and we don't have a
backing block device for this FS.
"Without having looked at it, I'm sure that hostfs does not use buffer_heads.
So setting your ->set_page_dirty a_op to point at __set_page_dirty_nobuffers()
is a reasonable thing to do - it'll provide a slight speedup."
This speedup is one less spinlock held and one less conditional branch, which
isn't bad.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix some console locking problems (including scheduling in atomic) and various
reorderings and cleanup in that code. Not yet ready for 2.6.12 probably.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Reuse asm-x86-64/unistd.h to build our syscall table, like x86-64 already
does.
Like for i386, we must add some #defines for all the (right!) changes UML does
to x86-64 syscall table.
Note: I noted a bogus:
[ __NR_sched_yield ] = (syscall_handler_t *) yield,
while doing this patch (which could only be a workaround for some strange bug,
but I would ignore this possibility). I'm changing this without notice.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix the moved syscall table for the x86_64 SUBARCH:
- redirect __NR_chown and such to versions aware of 32-bit UIDs,
- avoid the useless hack for sys_nfsservctl,
- use sys_sendfile64 in the table rather than sys_sendfile.
- __NR_uselib is sys_ni_syscall on x86_64 (which does not support A.OUT).
- __NR_getrlimit is sys_getrlimit, not sys_old_getrlimit
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Split the i386 entry.S files into entry.S and syscall_table.S which is
included in the previous one (so actually there is no difference between them)
and use the syscall_table.S in the UML build, instead of tracking by hand the
syscall table changes (which is inherently error-prone).
We must only insert the right #defines to inject the changes we need from the
i386 syscall table (for instance some different function names); also, we
don't implement some i386 syscalls, as ioperm(), nor some TLS-related ones
(yet to provide).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
GCC 2.95 uses __va_copy instead of va_copy. Handle it inside compiler.h
instead of in a casual file, and avoid the risk that this breaks with a newer
compiler (which it could do).
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Cleanup: make an inline of this empty proc.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We want to make possible, for the user, to enable the i586 AES implementation.
This requires a restructure.
- Add a CONFIG_UML_X86 to notify that we are building a UML for i386.
- Rename CONFIG_64_BIT to CONFIG_64BIT as is used for all other archs
- Tell crypto/Kconfig that UML_X86 is as good as X86
- Tell it that it must exclude not X86_64 but 64BIT, which will give the
same results.
- Tell kbuild to descend down into arch/i386/crypto/ to build what's needed.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Old versions of sed from 1998 (predating the first release of gcc 2.95, but
still in use by debian stable) don't understand the single-line version of the
sed append command. Since newer versions of sed still understand the...
ahem, "vintage" form of the command, change our code to use that.
Signed-off-by: Rob Landley <rob@landley.net>
Acked-by: Ian McDonald <imcdnzl@gmail.com>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Fix the error path, which is triggered when the processor misses the fpx
regs (i.e. the "fxsr" cpuinfo feature). For instance by VIA C3 Samuel2.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This trick is useless, because sys_ni.c will handle this problem by itself,
like it does even on UML for other syscalls.
Also, it does not provide the NFSD syscall when NFSD is compiled as a
module, which is a big problem.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Prevent the kernel from oopsing during the extable sorting, as it can do
now, because the extable is in the readonly section of the binary.
Jeff says: The exception table turned RO in 2.6.11-rc3-mm1 for some reason.
Moving it causes it to land in the writable data section of the binary.
Paolo says: This patch fixes a oops on startup, which can be easily
triggered by compiling with CONFIG_MODE_TT disabled, and STATIC_LINK either
disabled or enabled. The resulting kernel will always Oops on startup,
after printing this simple output:
I've verified, by binary search on the BitKeeper repository (synced up as
of 2.6.12-rc2), starting from the range 2.6.11-2.6.12-rc1, that this bug
shows up on BitKeeper revisions in the range [@1.1994.11.168,+inf), i.e.
starting from this:
[PATCH] lib/sort: Replace insertion sort in exception tables
Since UML does not use the exception table, it's likely that insertion sort
didn't happen to write anything on the table.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Those cards really need A in their names. Otherwise it is pretty hard
to find anything about them on the net.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This strcpy can run off the end of saved_command_line, and we don't need it any more anyway.
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch solves VM86 interrupt emulation deadlock on SMP systems. The VM86
interrupt emulation has been heavily tested and works well on UP systems
after last update, but it seems to deadlock when we have used it on SMP/HT
boxes now.
It seems, that disable_irq() cannot be called from interrupts, because it
waits until disabled interrupt handler finishes
(/kernel/irq/manage.c:synchronize_irq():while(IRQ_INPROGRESS);). This
blocks one CPU after another. Solved by use disable_irq_nosync.
There is the second problem. If IRQ source is fast, it is possible, that
interrupt is sometimes processed and re-enabled by the second CPU, before
it is disabled by the first one, but negative IRQ disable depths are not
allowed. The spinlocking and disabling IRQs over call to
disable_irq_nosync/enable_irq is the only solution found reliable till now.
Signed-off-by: Michal Sojka <sojkam1@control.felk.cvut.cz>
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The specifications that talk about E820 map doesn't have an upper limit on
the number of e820 entries. But, today's kernel has a hard limit of 32.
With increase in memory size, we are seeing the number of E820 entries
reaching close to 32. Patch below bumps the number upto 128.
The patch changes the location of EDDBUF in zero-page (as it comes after E820).
As, EDDBUF is not used by boot loaders, this patch should not have any effect
on bootloader-setup code interface.
Patch covers both i386 and x86-64.
Tested on:
* grub booting bzImage
* lilo booting bzImage with EDID info enabled
* pxeboot of bzImage
Side-effect:
bss increases by ~ 2K and init.data increases by ~7.5K
on all systems, due to increase in size of static arrays.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
http://bugme.osdl.org/show_bug.cgi?id=4426
vendor_id : AuthenticAMD
cpu family : 6
model : 10
model name : AMD Athlon(tm) XP
stepping : 0
cpu MHz : 2204.807
<snipped>
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 mmx fxsr sse pni syscall mmxext 3dnowext 3dnow
bogomips : 4358.14
We're marking bit 0 of extended function 0x80000001 cpuid as PNI support on
AMD processors, when it actually denotes x87 FPU present. Patch for i386
and x86_64 below.
Signed-off-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This adds the Intel ESB2 HD Audio DID to the hda_intel.c audio driver.
Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds the Intel ICH7DH and ICH7-M DH DID's to the irq.c and
pci_ids.h files.
Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Currently the i386 HPET code assumes the entire HPET implementation from
the spec is present. This breaks on boxes that do not implement the
optional legacy timer replacement functionality portion of the spec.
This patch, which is very similar to my x86-64 patch for the same issue,
fixes the problem allowing i386 systems that cannot use the HPET for the
timer interrupt and RTC to still use the HPET as a time source. I've
tested this patch on a system systems without HPET, with HPET but without
legacy timer replacement, as well as HPET with legacy timer replacement.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The recent support for K8 multicore was misported from x86-64 to i386, due
to an unnecessary inconsistency between the CPUID code. Sure, there is are
no x86-64 VIA chips yet, but it should happen eventually.
This patch fixes the i386 bug as well as makes x86-64 match i386 in the
handing of the CPUID array.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
do_debug() and do_int3() return void.
This patch fixes the CONFIG_KPROBES variant of do_int3() to return void too
and adjusts entry.S accordingly.
Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch by Jaya Kumar introduces a generic infrastructure to deal with
x86 chipsets with nonstandard reset sequences, and adds support for the
Geode gx1/cs5530a chipset.
Signed-off-by: Jaya Kumar <jayalk@intworks.biz>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A bug against an xSeries system showed up recently noting that the
check_nmi_watchdog() test was failing.
I have been investigating it and discovered in both i386 and x86_64 the
recent change to the routine to use the cpu_callin_map has uncovered a
problem. Prior to that change, on an SMP box, the test was trivally
passing because all cpu's were found to not yet be online, but now with the
callin_map they are discovered, it goes on to test the counter and they
have not yet begun to increment, so it announces a CPU is stuck and bails
out.
On all the systems I have access to test, the announcement of failure is
also bougs... by the time you can login and check /proc/interrupts, the
NMI count is happily incrementing on all CPUs. Its just that the test is
being done too early.
I have tried moving the call to the test around a bit, and it was always
too early. I finally hit on this proposed solution, it delays the routine
via a late_initcall(), seems like the right solution to me.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The new i386/x86_64 assemblers no longer accept instructions for moving
between a segment register and a 32bit memory location, i.e.,
movl (%eax),%ds
movl %ds,(%eax)
To generate instructions for moving between a segment register and a
16bit memory location without the 16bit operand size prefix, 0x66,
mov (%eax),%ds
mov %ds,(%eax)
should be used. It will work with both new and old assemblers. The
assembler starting from 2.16.90.0.1 will also support
movw (%eax),%ds
movw %ds,(%eax)
without the 0x66 prefix. I am enclosing patches for 2.4 and 2.6 kernels
here. The resulting kernel binaries should be unchanged as before, with
old and new assemblers, if gcc never generates memory access for
unsigned gsindex;
asm volatile("movl %%gs,%0" : "=g" (gsindex));
If gcc does generate memory access for the code above, the upper bits
in gsindex are undefined and the new assembler doesn't allow it.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On our raw spinlocks, we currently have an attempt at the lock, and if we do
not get it we enter a spin loop. This spinloop will likely continue for
awhile, and we pridict likely.
Shouldn't we predict that we will get out of the loop so our next instructions
are already prefetched. Even when we miss because the lock is still held, it
won't matter since we are waiting anyways.
I did a couple quick benchmarks, but the results are inconclusive.
16-way 690 running specjbb with original code
# ./specjbb 3000 16 1 1 19 30 120
...
Valid run, Score is 59282
16-way 690 running specjbb with unlikely code
# ./specjbb 3000 16 1 1 19 30 120
...
Valid run, Score is 59541
I saw a smaller increase on a JS20 (~1.6%)
JS20 specjbb w/ original code
# ./specjbb 400 2 1 1 19 30 120
...
Valid run, Score is 20460
JS20 specjbb w/ unlikely code
# ./specjbb 400 2 1 1 19 30 120
...
Valid run, Score is 20803
Anton said:
Mispredicting the spinlock busy loop also means we slow down the rate at which
we do the loads which can be good for heavily contended locks.
Note: There are some gcc issues with our default build and branch prediction,
but a CONFIG_POWER4_ONLY build should emit them correctly. I'm working with
Alan Modra on it now.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Replace a number of memory barriers with smp_ variants. This means we won't
take the unnecessary hit on UP machines.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use smp_mb and smp_wmb. In particular smp_wmb is lighter weight than wmb.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Calls into the hypervisor do not raise the thread priority. Ensure we are
running at medium priority upon entry to the hypervisor.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Recent gcc 4.0 testing uncovered a firmware issue. Some properties are larger
than 31 bytes and due to gcc 4.0s better stack allocation this overflow ran
over non volatile register storage.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We no longer use any ppcdebug stuff in a.out.h, so remove the define.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There were a few issues with the ppc64 noexec support:
The 64bit ABI has a non executable stack by default. At the moment 64bit apps
require a PT_GNU_STACK section in order to have a non executable stack.
Disable the read implies exec workaround on the 64bit ABI. The 64bit
toolchain has never had problems with incorrect mmap permissions (the 32bit
has, thats why we need to retain the workaround).
With these fixes as well as a gcc fix from Alan Modra (that was recently
committed) 64bit apps work as expected.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It turns out that our current __hash_page code will do a very hot busy-wait
loop waiting on _PAGE_BUSY to be cleared. It even does ldarx/stdcx in the
loop, which will bounce reservations around like crazy if there's more than
one CPU spinning on the same PTE (or even another PTE in the same
reservation granule). The end result is that each fault takes longer when
there's contention, which in turn increases the chance of another thread
hitting the same fault and also piling up. Not pretty.
There's two options here:
1. Do an out-of-line busy loop a'la spinlocks with just loads (no
reserves)
2. Just bail and refault if needed.
(2) makes sense here: If the PTE is busy, chances are it's in flux anyway
and the other code path making a change might just be ready to hash it.
This fixes a stampede seen on a large-ish system where a multithreaded
HPC app faults in the same text pages on several cpus at the same time.
Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On pSeries systems, according to the platform architecture specs, we are
supposed to be supplying a structure to firmware that tells firmware about
our capabilities, such as which version of the data structures that
describe available memory we are expecting to see. The way we end up
having to supply this data structure is a bit gross, since it was designed
for AIX and doesn't suit us very well. This patch adds the code to supply
this data structure to the firmware.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch converts ppc64 to use the generic pgtable-nopud.h instead of the
"fixup" header.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Fix
arch/ppc64/kernel/nvram.c:342: warning: `part' might be used uninitialized in this function
- Various codingstyle tweaks.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When I tried Ben's patches to the powermac sound driver on my G5, I found
that it was taking enormous numbers of sound DMA transmit interrupts. This
turned out to be because it was incorrectly configured as level-sensitive
instead of edge-sensitive, which in turn was because the code that parses
the interrupt tree that Open Firmware gives us was incorrectly assigning
another device the same irq number as the sound DMA transmit interrupt
(i.e. 1).
This patch fixes the problem, in a somewhat quick and dirty way for now,
but one which will work for all the machines we currently run on.
Ultimately Ben and I want to do something more general and robust, but this
should go in for 2.6.12.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove vsid argument to create_slbe, since it's no longer used.
Spotted by R Sharada.
Signed-off-by: Olof Johansson <olof@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch from Roland adds a PT_NOTE section to both 32 and 64 bits vDSOs
to expose the kernel version to glibc, thus avoiding a uname syscall on
every launch. This is equivalent to the patches Roland posted already for
x86 and x86-64.
Note: the 64 bits .note is actually using the 32 bits format. This is
normal. The ELF spec specifies a different format for 64 bits .note, but
for some reason, this was never properly implemented, the core dumps for
example are all using 32 bits format .note, and binutils cannot even read a
64 bits format .note. Talking to our toolchain folks, they think we'd
rather stick to 32 bits format .note everywhere and get the spec fixed some
day ...
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ben's patch that shutdowns master switch and restores it after resume
("pmac: Improve sleep code of tumbler driver") isn't enough here on an
iBook (snapper chip).
The master switch is correctly saved and restored, but somehow
tumbler_put_master_volume() gets called just after
tumbler_set_master_volume() and sets mix->master_vol[*] to 0. So, on
resuming, the master switch is reenabled, but the volume is set to 0.
Here's a patch that also saves and restores master_vol.
Signed-off-by: Colin Leroy <colin@colino.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch applies on top of my previous g5 related sound patches and adds
support for the Mac Mini to the PowerMac Alsa driver.
However, I haven't found any kind of HW support for volume control on this
machine. If it exist, it's well hidden. That means that you probably want
to make sure you use software with the ability to do soft volume control,
or use Alsa 0.9 pre-release with the softvol plugin.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a couple more issues with the management of the GPIOs
dealing with headphone and line out mute on the G5. It should fix the
remaining problems of people not getting any sound out of the headphone
jack.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There is a problem with large amounts of spurious IRQs on PowerPC 82xx
systems.
The problem is corrected by adding sync at the end of cpm2_mask_and_ack.
This may be needed on 8xx as well but has not yet been confirmed.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Dan Malek <dan@embeddedalley.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The handling of misaligned load/store multiple instructions did not check
to see if the address was ok to access before using __{get,put}_user().
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some earlier models of aluminium powerbooks and ibook G4s have a clock chip
that requires some tweaking before and after sleep. It seems that without
that magic incantation to disable and re-enable clock spreading, RAM isn't
properly refreshed during sleep. This fixes it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I noticed an occasional crash on wakeup from sleep on my powerbook
(strangly never happened before, probably timing related) that appears to
be due to a dangling interrupt while the chip is put to sleep and beeing
reset on wakeup.
This patch fixes is by disabling the irq in the ide pmac driver while
asleep and only re-enable it after the chip has been fully reset. This is
safe to do so as the interrupt of these apple IDE cells is never shared.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds the hooks into the PPC7D platforms file to support the DS1337
RTC device as the clock device for the PPC7D board.
Signed-off-by: Chris Elston <chris.elston@radstone.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes the SDRAM output from /proc/cpuinfo. The previous code
assumed that there was only one bank of SDRAM, and that the size in the memory
configuration register was the total size.
Signed-off-by: Chris Elston <chris.elston@radstone.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Moved common FPU exception handling code out of head.S so it can be used by
several of the sub-architectures that might of a full PowerPC FPU.
Also, uses new CONFIG_PPC_FPU define to fix alignment exception handling
for floating point load/store instructions to only occur if we have a
hardware FPU.
Signed-off-by: Jason McMullan <jason.mcmullan@timesys.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Some G3 CPUs can crash in funny way if a store from an FPU register
instruction is executed on a register that has never been initialized since
power on. This patch fixes it by making sure all FP registers have been
properly initialized at kernel boot and when waking from sleep. It also makes
the code that decides wether HID0_BTIC and HID0_DPM are allowed on a given CPU
smarter (it can actually _clear_ them now if they are not allowed instead of
just setting them when they are allowed in case the firmware got them wrong)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch provides finer grained permissions for the audit family of
Netlink sockets under SELinux.
1. We need a way to differentiate between privileged and unprivileged
reads of kernel data maintained by the audit subsystem. The AUDIT_GET
operation is unprivileged: it returns the current status of the audit
subsystem (e.g. whether it's enabled etc.). The AUDIT_LIST operation
however returns a list of the current audit ruleset, which is considered
privileged by the audit folk. To deal with this, a new SELinux
permission has been implemented and applied to the operation:
nlmsg_readpriv, which can be allocated to appropriately privileged
domains. Unprivileged domains would only be allocated nlmsg_read.
2. There is a requirement for certain domains to generate audit events
from userspace. These events need to be collected by the kernel,
collated and transmitted sequentially back to the audit daemon. An
example is user level login, an auditable event under CAPP, where
login-related domains generate AUDIT_USER messages via PAM which are
relayed back to auditd via the kernel. To prevent handing out
nlmsg_write permissions to such domains, a new permission has been
added, nlmsg_relay, which is intended for this type of purpose: data is
passed via the kernel back to userspace but no privileged information is
written to the kernel.
Also, AUDIT_LOGIN messages are now valid only for kernel->user messaging,
so this value has been removed from the SELinux nlmsgtab (which is only
used to check user->kernel messages).
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch removes the sclass argument from ipc_has_perm in the SELinux
module, as it can be obtained from the ipc security structure. The use of
a separate argument was a legacy of the older precondition function
handling in SELinux and is obsolete. Please apply.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In rare situations, drop_buffers() can be called for a page which has buffers,
but no ->mapping (it was truncated, but the buffers were left behind because
ext3 was still fiddling with them).
But if there was an I/O error in a buffer_head, drop_buffers() will try to get
at the address_space and will oops.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When ->writepage() returns WRITEPAGE_ACTIVATE, the page is still locked.
Explicitly unlock the page in mpage_writepages().
Signed-off-by: Nikita Danilov <nikita@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The smp_mb() is becaus sync_page() doesn't have PG_locked while it accesses
page_mapping(page). The comments in the patch (the entire patch is the
addition of this comment) try to explain further how and why smp_mb() is
used.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Always use page counts when doing RLIMIT_MEMLOCK checking to avoid possible
overflow.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is a patch for counting the number of pages for bounce buffers. It's
shown in /proc/vmstat.
Currently, the number of bounce pages are not counted anywhere. So, if
there are many bounce pages, it seems that there are leaked pages. And
it's difficult for a user to imagine the usage of bounce pages. So, it's
meaningful to show # of bouce pages.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use the new __GFP_NOMEMALLOC to simplify the previous handling of
PF_MEMALLOC.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Mempool is pretty clever. Looks too clever for its own good :) It
shouldn't really know so much about page reclaim internals.
- don't guess about what effective page reclaim might involve.
- don't randomly flush out all dirty data if some unlikely thing
happens (alloc returns NULL). page reclaim can (sort of :P) handle
it.
I think the main motivation is trying to avoid pool->lock at all costs.
However the first allocation is attempted with __GFP_WAIT cleared, so it
will be 'can_try_harder' if it hits the page allocator. So if allocation
still fails, then we can probably afford to hit the pool->lock - and what's
the alternative? Try page reclaim and hit zone->lru_lock?
A nice upshot is that we don't need to do any fancy memory barriers or do
(intentionally) racy access to pool-> fields outside the lock.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Mempools have 2 problems.
The first is that mempool_alloc can possibly get stuck in __alloc_pages
when they should opt to fail, and take an element from their reserved pool.
The second is that it will happily eat emergency PF_MEMALLOC reserves
instead of going to their reserved pools.
Fix the first by passing __GFP_NORETRY in the allocation calls in
mempool_alloc. Fix the second by introducing a __GFP_MEMPOOL flag which
directs the page allocator not to allocate from the reserve pool.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jack Steiner reported this to have fixed his problem (bad colouring):
"The patches fix both problems that I found - bad
coloring & excessive pages in pagesets."
In most workloads this is not likely to be such a pronounced problem,
however it should help corner cases. And avoiding powers of 2 in these
types of memory operations is always a good idea.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
mm/rmap.c:page_referenced_one() and mm/rmap.c:try_to_unmap_one() contain
identical code that
- takes mm->page_table_lock;
- drills through page tables;
- checks that correct pte is reached.
Coalesce this into page_check_address()
Signed-off-by: Nikita Danilov <nikita@clusterfs.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Address bug #4508: there's potential for wraparound in the various places
where we perform RLIMIT_AS checking.
(I'm a bit worried about acct_stack_growth(). Are we sure that vma->vm_mm is
always equal to current->mm? If not, then we're comparing some other
process's total_vm with the calling process's rlimits).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Anton Altaparmakov <aia21@cam.ac.uk> points out:
- It calls fault_in_pages_readable() which is completely bogus if @nr_segs >
1. It needs to be replaced by a to be written
"fault_in_pages_readable_iovec()".
- It increments @buf even in the iovec case thus @buf can point to random
memory really quickly (in the iovec case) and then it calls
fault_in_pages_readable() on this random memory.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Move definition of NOSTDINC_FLAGS below inclusion of arch Makefile, so
any arch specific settings to $(CC) takes effect before looking up the
compiler include directory.
The previous solution that replaced ':=' with '=' caused gcc to be
invoked one additional time for each directory visited.
This decreases kernel compile time with 0.1 second (3.6 -> 3.5 seconds) when
running make on a fully built kernel
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Tom Rini said:
Note that there is still a trivial'ish change to make. When mkimage
doesn't exist on the host we should say "uImage not made" or
something similar.
So I did like Tom asked.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Removing the dependency on vmlinux for the install target raised a few
complaints, so instead a new target i added: kernel_install.
kernel_install will install the kernel just like the ordinary install target.
The only difference is that install has a dependency on vmlinux,
kernel_install does not. Therefore kernel_install is the best choice
when accessing the kernel over a NFS mount or as another user.
kernel_install is similar to modules_install in the fact that neither does
a full kernel compile before performing the install.
In this way they are good for root use. Also added back the
dependency on vmlinux for the install target so peoples scripts are no
longer broken.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The documentation on these values seems to be rather wrong.
These values have been determined by mere trial and error.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
When the kernel creates a signal frame on the user stack, it puts the
old stack pointer value at the beginning so that the signal frame is
linked into the chain of stack frames like any other frame.
Unfortunately, for 32-bit processes we are writing the old stack
pointer as a 64-bit value rather than a 32-bit value, and the process
sees that as a null pointer, since it only looks at the first 32 bits,
which are zero since ppc is bigendian and the stack pointer is below
4GB. This bug is in SLES9 and RHEL4 too, hence the ccs.
This patch fixes the bug by making the signal code write the old stack
pointer as a u32 instead of an unsigned long.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
scumbags!
net/netlink/af_netlink.c: In function `netlink_sendmsg':
net/netlink/af_netlink.c:908: warning: implicit declaration of function `audit_get_loginuid'
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Patch from Sascha Hauer
This patch adds UCFR_RFDIV setting into i.MX serial driver.
This is required, if loader does not fully agree with Linux kernel
about UART setup manner. Linux only blindly expected some values until
now. This should enable to use even serial ports not recognized by
boot-loader as for example third UART found in the bluethoot module.
Patch also enables to detect original setup baudrate in more cases.
Signed-off-by: Pavel Pisa
Signed-off-by: Sascha Hauer
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Lennert Buytenhek
The IXDP2800 is an evalution platform for the IXP2800 processor that
has two IXP2800s connected to the same PCI bus. This is problematic
as both CPUs will try to configure the PCI bus as they boot linux.
Contrary to on the other IXP2000 platforms, the boot loader on the
IXDP2800 doesn't configure the PCI bus properly, so we do want the
linux instance on one of the CPUs to do that.
Making one of the CPUs ignore the PCI bus (and thus act like a pure
PCI slave device) is not an option because there is a 82559 NIC on
the PCI bus for each of the CPUs.
The chosen solution is to have the master CPU configure the PCI bus
while the slave is kept in a quiescent state, and then to have the
slave CPU scan the PCI bus (without assigning resources) while the
master is kept in a quiescent state. After this ritual, the master
deletes the slave NIC from its PCI device list, the slave deletes
the master NIC from its device list, and (almost) all is well.
There's still one little problem: each of the CPUs has a 1G SDRAM
BAR, but the IXP2000 only has 512M of outbound PCI memory window.
We solve this by hand-assigning the master and slave SDRAM BARs to
a location outside each of the IXP's outbound PCI windows, and by
having the rest of the BARs autoconfigured in the outbound PCI
windows, in the range [e0000000..ffffffff], so that there is a 1:1
pci:phys mapping between them.
Even with this patch, a number of issues still remain -- just imagine
what happens if one of the CPUs is rebooted, by watchdog or by hand,
but the other one isn't. But those issues are not easily fixable
given the strange PCI layout of this board and the behavior of the
boot loader shipped with the platform.
Signed-off-by: Lennert Buytenhek
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from George G. Davis
This patch is required for kernel XIP support on ARMv6 machines. It ensures that the access permission bits for kernel XIP section descriptors are APX=1 and AP[1:0]=01, which is Kernel read-only/User no access permissions. Prior to this change, kernel XIP section descriptor access permissions were set to Kernel no access/User no access on ARMv6 machines and the kernel would therefore hang upon entry to userspace when set_fs(USER_DS) was executed.
Signed-off-by: Steve Longerbeam
Signed-off-by: George G. Davis
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Olav Kongas
On ARM, the outX() and writeX() families of macros take the
result of cpu_to_leYY(), which is of restricted type __leYY,
and feed it to __raw_writeX(), which expect an argument of
unrestricted type. This results in 'sparse -Wbitwise'
warnings about incorrect types in assignments. Analogous
type mismatch warnings are issued for inX() and readX()
counterparts. The below patch resolves these warnings by
adding forced typecasts.
Signed-off-by: Olav Kongas
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Nicolas Pitre
This patch entirely reworks the kernel assistance for NPTL on ARM.
In particular this provides an efficient way to retrieve the TLS
value and perform atomic operations without any instruction emulation
nor special system call. This even allows for pre ARMv6 binaries to
be forward compatible with SMP systems without any penalty.
The problematic and performance critical operations are performed
through segment of kernel provided user code reachable from user space
at a fixed address in kernel memory. Those fixed entry points are
within the vector page so we basically get it for free as no extra
memory page is required and nothing else may be mapped at that
location anyway.
This is different from (but doesn't preclude) a full blown VDSO
implementation, however a VDSO would prevent some assembly tricks with
constants that allows for efficient branching to those code segments.
And since those code segments only use a few cycles before returning to
user code, the overhead of a VDSO far call would add a significant
overhead to such minimalistic operations.
The ARM_NR_set_tls syscall also changed number. This is done for two
reasons:
1) this patch changes the way the TLS value was previously meant to be
retrieved, therefore we ensure whatever library using the old way
gets fixed (they only exist in private tree at the moment since the
NPTL work is still progressing).
2) the previous number was allocated in a range causing an undefined
instruction trap on kernels not supporting that syscall and it was
determined that allocating it in a range returning -ENOSYS would be
much nicer for libraries trying to determine if the feature is
present or not.
Signed-off-by: Nicolas Pitre
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from George G. Davis
As noted in http://www.arm.com/linux/patch-2.6.9-arm1.gz, the "Faulty SWP instruction on 1136 doesn't set bit 11 in DFSR." So the v6_early_abort handler does not report the correct rd/wr direction for the SWP instruction which may result in SEGVS or hangs. In order to work around this problem, this patch merely updates the fix contained in the ARM Ltd. patch to use the macroised abort handler fixups.
Signed-off-by: George G. Davis
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Lennert Buytenhek
Assigning the address zero to a PCI device BAR causes some part of the
PCI subsystem to believe that resource allocation for that BAR failed
due to resource conflicts, which will make attempts to enable the
device fail. Work around this by assigning I/O addresses starting
from 00010000.
While we're at it, make the PCI I/O resource end at 0001ffff, since we
only have 64k of outbound I/O window on the IXP2000, and we don't do
bank switching.
Signed-off-by: Lennert Buytenhek
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Lennert Buytenhek
On the IXDP2800, the bootloader does an awful job of configuring
the PCI bus, so we make linux reconfigure everything. Having a 1:1
pci:phys address mapping generally simplifies everything, so try to
allocate PCI addresses from the [e0000000..ffffffff] range, which is
the physical address range of the outbound PCI window on the IXP2000.
This does not affect any of the other IXP2000 platforms since they
all use their bootloader's PCI resource assignment.
Signed-off-by: Lennert Buytenhek
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Patch from Lennert Buytenhek
Export ixp2000_pci_config_addr, to be used by the IXDP2800 platform
setup code to coordinate booting the master and slave NPU.
Signed-off-by: Lennert Buytenhek
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This makes a trap on the 'iret' that returns us to user space
cause a nice clean SIGSEGV, instead of just a hard (and silent)
exit.
That way a debugger can actually try to see what happened, and
we also properly notify everybody who might be interested about
us being gone.
This loses the error code, but tells the debugger what happened
with ILL_BADSTK in the siginfo.
Attached is a new patch that solves the issue of getting valid credentials
into the LOGIN message. The current code was assuming that the audit context
had already been copied. This is not always the case for LOGIN messages.
To solve the problem, the patch passes the task struct to the function that
emits the message where it can get valid credentials.
Signed-off-by: Steve Grubb <sgrubb@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
If netlink_unicast() fails, requeue the skb back at the head of the queue
it just came from, instead of the tail. And do so unless we've exceeded
the audit_backlog limit; not according to some other arbitrary limit.
From: Chris Wright <chrisw@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Most audit control messages are sent over netlink.In order to properly
log the identity of the sender of audit control messages, we would like
to add the loginuid to the netlink_creds structure, as per the attached
patch.
Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
arch/mips/kernel/ptrace.c:305: warning: function declaration isn't a prototype
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Attached is a patch against David's audit.17 kernel that adds checks
for the TIF_SYSCALL_AUDIT thread flag to the ia64 system call and
signal handling code paths.The patch enables auditing of system
calls set up via fsys_bubble_down, as well as ensuring that
audit_syscall_exit() is called on return from sigreturn.
Neglecting to check for TIF_SYSCALL_AUDIT at these points results in
incorrect information in audit_context, causing frequent system panics
when system call auditing is enabled on an ia64 system.
Signed-off-by: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
They don't seem to work correctly (investigation ongoing), but we don't
actually need to do it anyway.
Patch from Peter Martuccelli <peterm@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Attached is a patch that corrects a signed/unsigned warning. I also noticed
that we needlessly init serial to 0. That only needs to occur if the kernel
was compiled without the audit system.
-Steve Grubb
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
We were calling ptrace_notify() after auditing the syscall and arguments,
but the debugger could have _changed_ them before the syscall was actually
invoked. Reorder the calls to fix that.
While we're touching ever call to audit_syscall_entry(), we also make it
take an extra argument: the architecture of the syscall which was made,
because some architectures allow more than one type of syscall.
Also add an explicit success/failure flag to audit_syscall_exit(), for
the benefit of architectures which return that in a condition register
rather than only returning a single register.
Change type of syscall return value to 'long' not 'int'.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Main change is in path_lookup: added a goto to do audit_inode
instead of return statement, when emul_lookup_dentry for root
is successful.The existing code does audit_inode only when
lookup is done in normal root or cwd.
Other changes: Some lookup routines are returning zero on success,
and some are returning zero on failure. I documented the related
function signatures in this code path, so that one can glance over
abstract functions without understanding the entire code.
Signed-off-by: Prasanna Meda <pmeda@akamai.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
kernel/audit.c: In function `audit_log_untrustedstring':
kernel/audit.c:736: warning: comparison is always false due to limited range of data type
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
We log strings from userspace, such as arguments to open(). These could
be formatted to contain \n followed by fake audit log entries. Provide
a function for logging such strings, which gives a hex dump when the
string contains anything but basic printable ASCII characters. Use it
for logging filenames.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
In order to properly fix some issues with cpufreq vs. sleep on
PowerBooks, I had to add a suspend callback to the pmac_cpufreq driver.
I must force a switch to full speed before sleep and I switch back to
previous speed on resume.
I also added a driver flag to disable the warnings in suspend/resume
since it is expected in this case to have different speed (and I want it
to fixup the jiffies properly).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The addition of the PT_NOTE didn't take in the x86_64 version of the i386
vDSO, because I forgot the linker script bit in that copy.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
.. since it can be due to pending kill.
Update readme information to better describe cifs umount
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
if cifsd thread is no longer running to demultixplex responses.
Do not send FindClose request when FindFirst failed without reaching end
of search.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
pointed out by Dave Stahl and Vince Negri in which cifs can update the
last modify time on a server modified file without invalidating the
local cached data due to an intervening readdir.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
unless response is larger than 256 bytes. This cuts more than 1/3 of
the large memory allocations that cifs does and should be a huge help to
memory pressure under stress.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
And fix to not needlessly send new POSIX QFSInfo when server does not
explicitly claim support for the new protocol extensions.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
.. and do not double endian convert the special characters whem mounted
with mapchars mount parm.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
For handling seven special characters that shells use for filenames.
This first parts implements conversions from Unicode.
Signed-off-by: Steve French
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
remove sparse warnings, unnecessary pad in QueryFileInfo and redundant
function define.
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Old servers such as NT4 do not support this level of FindFirst (and
retry with a lower infolevel)
Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If arch_setup_additional_pages fails, the error path will do some double-frees.
This fixes it.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On Mon, Apr 25, 2005 at 12:01:13PM -0400, Dave Jones wrote:
> This has been brought up before.. http://lkml.org/lkml/2000/1/21/116
> but didnt seem to get resolved. This morning I got someone
> file a bugzilla about it breaking sysctl(8).
And here's its ipv6 counterpart.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Include chunk and skb sizes in sendbuffer accounting.
- 2 policies are supported. 0: per socket accouting, 1: per association
accounting
DaveM: I've made the default per-socket.
Signed-off-by: Neil Horman <nhorman@redhat.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Fixed sctp_vtag_verify_either() to comply with impguide 2.41 B) and C).
- Make sure vtag is reflected when T-bit is set in SHUTDOWN-COMPLETE sent
due to an OOTB SHUTDOWN-ACK and in ABORT sent due to an OOTB packet.
- Do not set T-Bit in ABORT chunk in response to INIT.
- Fixed some comments to reflect the new meaning of the T-Bit.
Signed-off-by: Jerome Forissier <jerome.forissier@hp.com>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
settimeofday will set the time a little bit too early on systems using
time interpolation since it subtracts the current interpolator offset
from the time. This used to be necessary with the code in 2.6.9 and earlier
but the new code resets the time interpolator after setting the time.
Thus the time is set too early and gettimeofday will return a time slightly
before the time specified with settimeofday if invoked immeditely after
settimeofday.
This removes the obsolete subtraction of the time interpolator offset
and makes settimeofday set the time accurately.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We ignore the bottom 4 bits of the X resolution, so we should
round X resolutions up to the nearest multiple of 16.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
We were supporting 24bpp. However, the pixel organisation in
memory was 0RGB, so it was 24bpp in 32bit words. This means
we're actually supporting 32bpp and not 24bpp.
Also, add a check to ensure that we don't exceed the available
framebuffer when changing display resolutions.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
The ppc vDSO would not properly clear the return value for some calls,
which will be a problem when interfacing those calls with glibc. This
should be fixed before 2.6.12 is released (as it is the first kernel
with the ppc vDSO) so that we don't have to play with symbol versioning
and ugly workarounds.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The attached patch removes __user from compat_uptr_t types in the NFS4 mount
32-bit->64-bit compatibility structures.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
clk_get() comments can be confusing. Add extra explaination of
the dev and id parameters to ensure correct usage.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
This fixes an error on the device open code that allows a non-existent
device to be opened causing later panic problems.
Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Call pci_enable_device() before looking at IRQ and resources,
and pci_disable_device() when shutting the interface down.
The driver requires this fix or the "pci=routeirq" workaround
on 2.6.10 and later kernels.
Reported and tested by Artur Lipowski.
From: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This is a fix to the pgtable_quicklist code. There is a GFP_KERNEL
allocation in pgtable_quicklist_alloc(), which spews the usual warnings
if the kernel is under heavy VM pressure and the reclaim code is
invoked. re-enable preempt before we allocate the new page.
This patch is against 2.6.12-rc2-mm2
Signed-off-by: Martin Hicks <mort@sgi.com>
Signed-off-by: Tony Luck <tony.luckintel.com>
->pretcode in struct rt_sigframe is a userland pointer (and already
treated as such by code using that field).
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
trivial iomem annotations + memset() replaced with memset_io() in a
place that deals with ioremapped area.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Convert 8250_hp300 to use serial8250_register_port() and
serial8250_unregister_port().
Tested by Kars de Jong, 4/4/2005.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
SVC_MODE reflects the MODE_SVC definition in asm/ptrace.h. Use
the asm/ptrace.h definition instead, and remove SVC_MODE.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
A lot of places in there are including major.h for no reason
whatsoever. Removed. And yes, it still builds.
The history of that stuff is often amusing. E.g. for net/core/sock.c
the story looks so, as far as I've been able to reconstruct it: we used to
need major.h in net/socket.c circa 1.1.early. In 1.1.13 that need had
disappeared, along with register_chrdev(SOCKET_MAJOR, "socket", &net_fops)
in sock_init(). Include had not. When 1.2 -> 1.3 reorg of net/* had moved
a lot of stuff from net/socket.c to net/core/sock.c, this crap had followed...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch removes a superfluous intialization from tcp_data_queue().
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A lot of places in there are including major.h for no reason whatsoever.
Removed. And yes, it still builds.
The history of that stuff is often amusing. E.g. for net/core/sock.c
the story looks so, as far as I've been able to reconstruct it: we used
to need major.h in net/socket.c circa 1.1.early. In 1.1.13 that need
had disappeared, along with register_chrdev(SOCKET_MAJOR, "socket",
&net_fops) in sock_init(). Include had not. When 1.2 -> 1.3 reorg of
net/* had moved a lot of stuff from net/socket.c to net/core/sock.c,
this crap had followed...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
fs/isofs includes trimmed down to something resembling sanity.
Kernel-only parts of linux/iso_fs.h and entire linux/iso_fs_{sb,i}.h
moved to fs/isofs/isofs.h.
A lot of useless #include in fs/isofs/*.c killed.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Deepak Saxena
The current memset() and memzero() macros on ARM reference the
incoming parameters more than once and this can cause uninted
side-effects. The issue was found while debugging SCTP protocol
and with the specific usage of memzero(skb_put(skb,size),size).
This call would call skb_put(skb,size) twice leading to badness.
The fixed version copies the incoming parameters into local
variables and uses those instead.
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King
Patch from Jeff Lackey
This patch updates arch/arm/mach-pxa/sleep.S to support
the PXA270 CPU. It works around Errata 39 & 50 from the
Intel(R) PXA27x Processor Family Specification Update.
Signed-off-by: Jeff Lackey
Signed-off-by: Russell King
tg3_restart_ints() is called to re-enable interrupts after tg3_poll()
has finished all the work. It calls tg3_cond_int() to force an interrupt
if the status block updated bit is set. The updated bit will be set if
there is a new status block update sometime during tg3_poll() and it can
be very often. The worst part is that even if all the work has been
processed, the updated bit remains set and an interrupt will be forced
unnecessarily.
The fix is to call tg3_has_work() instead to determine if new work is
posted before forcing an interrupt. The way to force an interrupt is
also changed to use "coalesce_now" instead of "SETINT". The former is
generally a safer way to force the interrupt.
Also deleted the first parameter to tg3_has_work() which is unused.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch refreshes the hw rx producer in tg3_rx() so that additional
work posted by the hardware can be processed.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a bug that causes tg3_has_work() to always return 1.
rx work is determined by comparing tp->rx_rcb_ptr with the current hw
producer index. The hw producer index is modulo the ring size, but tp-
>rx_rcb_ptr is a free running counter that goes up beyond the ring size.
After the ring wraps around once, tg3_has_work() will always return 1.
The fix is to always do modulo arithmetic on tp->rx_rcb_ptr.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Patch from Lucas Correia Villa Real
Adds IISFCON definitions for the S3C2400 at
include/asm-arm/arch-s3c2400/regs-iis.h.
Signed-off-by: Lucas Correia Villa Real
Signed-off-by: Ben Dooks
Signed-off-by: Russell King
Patch from Lucas Correia Villa Real
The S3C2400 doesn't have a cpuid information stored anywhere. This patch adds
support to the S3C2400 at include/asm-arm/arch-s3c2400/uncompress.h by
initializing the cpuid variable to the S3C2410, as they share the same
routine. The GSTATUS1 pin is then used only if not compiling for the S3C2400.
Signed-off-by: Lucas Correia Villa Real
Signed-off-by: Ben Dooks
Signed-off-by: Russell King
[IA64] fix ia64 Kconfig to allow CONFIG_PM on sn2
This probably should have been fixed when I fixed up the generic build for
discontig+numa machines, but oh well.
CONFIG_PM is allowable for generic builds but not for sn2 builds, which
doesn't make much sense, and in fact breaks the build if recent ACPI bits are
added to the tree. It looks like the only arch that needs to prevent
CONFIG_PM stuff is the ski simulator (though those options could probably use
some cleanup as well), so remove the big conditional and replace it with a
simple test for IA64_HP_SIM instead.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The following is an update of the patch I sent yesterday
(3/9/05) incorporating suggestions from Christoph Hellwig and
Andreas Schwab. It allows Altix and Altix-like systems to
handle environmental events generated by the system controllers,
and should apply on top of Jack Steiner's patch of 3/1/05 ("New
chipset support for SN platform") and Mark Goodwin's patch of
3/8/05 ("Altix SN topology support for new chipsets and pci
topology").
Signed-off-by: Greg Howard <ghoward@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
vector sharing patch had a typo ... mismatched spin_lock() with
a spin_unlock_irq(). Fix from Kenji Kaneshige.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Rohit and Suresh changed their mind about the order to print things
in /proc/cpuinfo, but didn't include the change in the version of
the patch they sent to me.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Current ia64 linux cannot handle greater than 184 interrupt sources
because of the lack of vectors. The following patch enables ia64 linux
to handle greater than 184 interrupt sources by allowing the same
vector number to be shared by multiple IOSAPIC's RTEs. The design of
this patch is besed on "Intel(R) Itanium(R) Processor Family Interrupt
Architecture Guide".
Even if you don't have a large I/O system, you can see the behavior of
vector sharing by changing IOSAPIC_LAST_DEVICE_VECTOR to fewer value.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Version 3 - rediffed to apply on top of Ashok's hotplug cpu
patch. /proc/cpuinfo output in step with x86.
This is an updated MC/MT identification patch based on the
previous discussions on list.
Add the Multi-core and Multi-threading detection for IPF.
- Add new core and threading related fields in /proc/cpuinfo.
Physical id
Core id
Thread id
Siblings
- setup the cpu_core_map and cpu_sibling_map appropriately
- Handles Hot plug CPU
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Gordon Jin <gordon.jin@intel.com>
Signed-off-by: Rohit Seth <rohit.seth@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
memcpy_mck.S::__copy_user breaks in the prefetch code under these conditions :-
* src is unaligned and
* dst is near the end of a page and
* the page after dst is unmapped.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Thanks to Mark for tracking down this one. Users of __copy_from_user_inatomic()
will be sad if we don't handle lfetch faults for the "no_context" case.
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch against ia64-test-2.6.12 is needed for forthcoming
Altix chipsets. It renames geoid_any_t to geoid_common_t and
splits the 8bit 'slab' field into two 4bit fields for 'slab'
and 'slot'. Similar changes in the Altix SAL will retain backward
compatibility for old kernels.
Signed-off-by: Mark Goodwin <markgw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Sadly, I goofed in this syscall-tuning patch:
ChangeSet 1.1966.1.40 2005/01/22 13:31:05 davidm@hpl.hp.com
[IA64] Improve ia64_leave_syscall() for McKinley-type cores.
Optimize ia64_leave_syscall() a bit better for McKinley-type cores.
The patch looks big, but that's mostly due to renaming r16/r17 to r2/r3.
Good for a 13 cycle improvement.
The problem is that the size of the physical stacked registers was
loaded into the wrong register (r3 instead of r17). Since r17 by
coincidence always had the value 1, this had the effect of turning
rse_clear_invalid into a no-op. That poses the risk of leaking kernel
state back to user-land and is hence not acceptable.
The fix below is simple, but unfortunately it costs us about 28 cycles
in syscall overhead. ;-(
Unfortunately, there isn't much we can do about that since those
registers have to be cleared one way or another.
--david
Signed-off-by: Tony Luck <tony.luck@intel.com>
patch 2:
Shub2 BTE recovery code will be implemented in SAL.
Define the SAL interface.
Modify bte_error to call SAL for shub2.
Signed-off-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch to disable SGI TIOCA GART TLB prefetching due to hw bug.
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This fixes a couple of bugs in the zx1/sx1000 sba_iommu. These are
all pretty low likelihood of hitting. The first problem is a simple off
by one, deep in the sba_alloc_range() error path. Surrounding that was
a lock ordering problem that could have potentially deadlocked with the
order the locks are grabbed in sba_unmap_single(). I moved the resource
locking into sba_search_bitmap() to prevent this. Finally, there's a
potential race between unmapping pdir entries and marking incoming DMA
pages clean. If you see any oddities, please let me know, but I've
tested it pretty thoroughly here. Tony, please apply. Thanks,
BTW, many of the options in this driver not on by default are becoming
more and more broken. I'll be working on some patches to clean them
out, but I wanted to get this bug fix out first.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch introduces using the quicklists for pgd, pmd, and pte levels
by combining the alloc and free functions into a common set of routines.
This greatly simplifies the reading of this header file.
This patch is simple but necessary for large numa configurations.
It simply ensures that only pages from the local node are added to a
cpus quicklist. This prevents the trapping of pages on a remote nodes
quicklist by starting a process, touching a large number of pages to
fill pmd and pte entries, migrating to another node, and then unmapping
or exiting. With those conditions, the pages get trapped and if the
machine has more than 100 nodes of the same size, the calculation of
the pgtable high water mark will be larger than any single node so page
table cache flushing will never occur.
I ran lmbench lat_proc fork and lat_proc exec on a zx1 with and without
this patch and did not notice any change.
On an sn2 machine, there was a slight improvement which is possibly
due to pages from other nodes trapped on the test node before starting
the run. I did not investigate further.
This patch shrinks the quicklist based upon free memory on the node
instead of the high/low water marks. I have written it to enable
preemption periodically and recalculate the amount to shrink every time
we have freed enough pages that the quicklist size should have grown.
I rescan the nodes zones each pass because other processess may be
draining node memory at the same time as we are adding.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch adds the necessary "hook" to allow SGI/SN
machines to perform a system power off upon a
'init 0', 'halt -p', 'poweroff' or 'shutdown -h'.
The "hook" is to set the pm_power_off callback
to ia64_sn_power_down(). pm_power_off is checked
in machine_power_off()/do_poweroff() and, if set, is executed.
ia64_sn_power_down() is a function already present (but not
used currently) in the sn kernel.
ia64_sn_power_down() makes a SAL call to execute the
power off.
Signed-off-by: Aaron J Young <ayoung@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch is to provide CX port infrastructure for SGI TIO-based
h/w. Also a 'core services' driver for SGI FPGA-based h/w.
Signed-off-by: Bruce Losure <blosure@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
- make pfm_sysctl a global such that it is possible
to enable/disable debug printk in sampling formats
using PFM_DEBUG.
- remove unused pfm_debug_var variable
- fix a bug in pfm_handle_work where an BUG_ON() could
be triggered. There is a path where pfm_handle_work()
can be called with interrupts enabled, i.e., when
TIF_NEED_RESCHED is set. The fix correct the masking
and unmasking of interrupts in pfm_handle_work() such
that we restore the interrupt mask as it was upon entry.
signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This patch enables our TIO IO chipset to support variable length nasids in
Shub2 chipset.
Signed-off-by: Colin Ngam <cngam@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
please accept this patch to the Altix SN platform topology export
interface to support new chipsets and to export PCI topology.
This follows on top of Jack Steiner's patch dated March 1st
("New chipset support for SN platform").
Signed-off-by: Mark Goodwin <markgw@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Recently I noticed that clearing ar.ssd/ar.csd right before srlz.d is
causing significant stalling in the syscall path. The patch below
fixes that by moving the register-writes after srlz.d. On a Madison,
this drops break-based getpid() from 241 to 226 cycles (-15 cycles).
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
In the event a raw socket is created for sending purposes only, the creator
never bothers to check the socket's receive queue. But we continue to
add skbs to its queue until it fills up.
Unfortunately, if ip_conntrack is loaded on the box, each skb we add to the
queue potentially holds a reference to a conntrack. If the user attempts
to unload ip_conntrack, we will spin around forever since the queued skbs
are pinned.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Detect user space by the unwind frame with predicate PRED_USER_STACK
set, instead of a user space IP. Tighten up the last ditch check for
running off the top of the kernel stack.
Based on a suggestion by David Mosberger, reworked to fit the current
tree. This survives my stress test which used to break 2.6.9 kernels.
Unlike 2.6.11, the stress test now unwinds to the correct point, so
gdb can get the user space registers.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Call cpu_relax() in busy-waiting loops of the ITC-syncing code.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Change the value of the SAL call number for a new SAL request. The
initial implementation in the PROM did not match what the OS expected.
Since the OS can run on PROMs that do not implement the new call,
changing the call number avoids the issue. New PROMs will implement
the new call number. (This avoids problems with the 4.05 PROM).
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Provide a driver for the altix TIOCA AGP chipset. An agpgart backend will
be provided as a separate patch.
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Move a couple of headers out of arch/ia64/sn/include/pci and into
include/asm-ia64/sn.
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Provide an abstraction of the altix pci dma runtime layer so that multiple
pci-based bridges can be supported.
Signed-off-by: Mark Maule <maule@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Patch from Lucas Correia Villa Real
Adds a define to the SPI Card Select bit on the S3C2400 into
include/asm-arm/arch-s3c2410/regs-spi.h
Signed-off-by: Lucas Correia Villa Real
Signed-off-by: Russell King
Patch from Lucas Correia Villa Real
Adds DRAM refresh definitions and sets the BANKSIZE_MASK for the S3C2400 on
include/asm-arm/arch-s3c2400/regs-mem.h
Signed-off-by: Lucas Correia Villa Real
Signed-off-by: Ben Dooks
Signed-off-by: Russell King
This patch makes some needlessly global code static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
replaced declaration of EA from u32 to unsigned long - this beast is
used only to cast it to (userland) pointer and proper integer type for
that is unsigned long.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* ->io_base_virt in struct pci_controller is iomem pointer. Marked as such.
Most of the places that used it are already annotated to expect iomem.
* places that did gratitious (and wrong) casts a-la
isa_io_base = (unsigned long)ioremap(...);
hose->io_base_virt = (void *)isa_io_base;
turned into
hose->io_base_virt = ioremap(...);
isa_io_base = (unsigned long)hose->io_base_virt;
* pci_bus_io_base() annotated as returning iomem pointer.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Bob Breuer wrote a patch to add dump_stack for sparc. Supposedly, this
was applied, but it doesn't exist in 2.6.11.
This is the same patch, rediffed against 2.6.11.
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Peter Jones uncovered this one while we were debugging the framebuffer
issues. There are some references to -1 in the mxcc asm code, which
should be 0xffffffff.
This patch gets rid of the -1s.
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sparc32 ksyms is missing a few more symbols, these are primarily
related to SMP, and will be needed as SMP gets beaten back into
functionality.
Specifically, add __cpu_data (PER_CPU), cpu_online_map, and
phys_cpu_present_map.
This patch assumes that the earlier "linux-2.6.11-sparc-fixksyms.patch"
is applied, otherwise, it will apply with fuzz.
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This enables the sun linux logo to be selected on sparc32.
Signed-off-by: Bob Breuer <breuerr@mc.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds some missing sparc32 ksyms that are needed.
Specifically, ___rw_read_enter, ___rw_read_exit, ___rw_write_enter, and
sys_close.
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Using the same logic as the other framebuffer fixes committed in 2.6.11,
this is a set of fixes to make TCX functional on the console again. Adds
the tcx_pan_display function, sets the
all->info.var.{red,green,blue}.length values to 8, and runs fb_set_cmap.
Also looks for the correct SUNW,tcx prom value.
This patch just slipped through the cracks.
Originally by: Georg Chini <georg.chini@triaton-webhosting.com>
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch is incredibly trivial, but it does resolve some of the user
confusion as to what "L1-A" actually is.
Clarify printk message to refer to Stop-A (L1-A).
Gentoo has a virtually identical patch in their kernel sources.
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Minor cleanups for sparc specific drivers (sunbmac, sunqe, sunlance,
sunhme, esp) so that they have a full module version definition that is
consistent with other upstream drivers.
Signed-off-by: Tom 'spot' Callaway <tcallawa@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Please apply, SCTP/DCCP needs this when INET_REFCNT_DEBUG
is set.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Calculate hashtable size to fit into a page instead of a hardcoded
256 buckets hash table. Results in a 1024 buckets hashtable on
most systems.
Replace old naive extract-8-lsb-bits algorithm with a better
algorithm xor'ing 3 or 4 bit fields at the size of the hashtable
array index in order to improve distribution if the majority of
the lower bits are unused while keeping zero collision behaviour
for the most common use case.
Thanks to Wang Jian <lark@linux.net.cn> for bringing this issue
to attention and to Eran Mann <emann@mrv.com> for the initial
idea for this new algorithm.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
The SELinux hooks invoke ipv6_skip_exthdr() with an incorrect
length final argument. However, the length argument turns out
to be superfluous.
I was just reading ipv6_skip_exthdr and it occured to me that we can
get rid of len altogether. The only place where len is used is to
check whether the skb has two bytes for ipv6_opt_hdr. This check
is done by skb_header_pointer/skb_copy_bits anyway.
Now it might appear that we've made the code slower by deferring
the check to skb_copy_bits. However, this check should not trigger
in the common case so this is OK.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
And provide an example simply action in order to
demonstrate usage.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
From: Panagiotis Issaris <takis@lumumba.luc.ac.be>
In the ENI155P device driver in six possible failure cases the requested
irq is not being released.
In three of the above possible failure cases additionally there seems to
be a memory leak.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The problem is that when doing MTU discovery, the too-large segments in
the write queue will be calculated as having a pcount of >1. When
tcp_write_xmit() is trying to send, tcp_snd_test() fails the cwnd test
when pcount > cwnd.
The segments are eventually transmitted one at a time by keepalive, but
this can take a long time.
This patch checks if TSO is enabled when setting pcount.
Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replacing the open coded equivalents and making ax25 look more like
a linux network protocol, i.e. more similar to inet.
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The NAT changes in 2.6.11 changed the position where helpers
are called and perform packet mangling. Before 2.6.11, a NAT
helper was called before the packet was NATed and had its
sequence number adjusted. Since 2.6.11, the helpers get packets
with already adjusted sequence numbers.
This breaks sequence number adjustment, adjust_tcp_sequence()
needs the original sequence number to determine whether
a packet was a retransmission and to store it for further
corrections. It can't be reconstructed without more information
than available, so this patch restores the old order by
calling helpers from a new conntrack hook two priorities
below ip_conntrack_confirm() and adjusting the sequence number
from a new NAT hook one priority below ip_conntrack_confirm().
Tracked down by Phil Oester <kernel@linuxace.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
void * __iomem foo is not a pointer to iomem - it's an iomem variable
containing void *. A pile of such guys in arch/sparc64/kernel/time.c,
drivers/sbus/char/rtc.c and include/asm-sparc64/mostek.h turned into
intended void __iomem *.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
(!ARCH_S390 && !M68K && !IA64 && !UML) is obviously always true on ARM.
Intended behaviour for ARM is "absent unless we are on RiscPC or
EBSA285". So what we want is added && !ARM in the first term - without
it the last part (|| ARCH_RPC || ARCH_EBSA285, that is) doesn't do
anything.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Turns __get_unaligned() and __put_unaligned into macros. That is
definitely safe; leaving them as inlines breaks on e.g. alpha [try to
build ncpfs there and you'll get unresolved symbols since we end up
getting __get_unaligned() not inlined].
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
All boards dealt with by I2C_MPC are 32bit. Moreover, driver simply
won't build on ppc64 - it uses ppc32-only types all over the place.
Dependency fixed - it's PPC32, not PPC.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
CONFIG_HW_CONSOLE selects vt.c; without the stuff pulled by CONFIG_VT it
will not build. Normally we get both in drivers/char/Kconfig and there
HW_CONSOLE depends on VT. sparc64 does not pull drivers/char/Kconfig
and has that sutff in arch/sparc64/Kconfig instead. However, it forgets
to add the same dependency. As the result, turning VT off [which is
possible] will end up with broken build. For no good reason...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Somebody forgot that | has higher priority than ?:. As the result,
allocation is done with bogus flags - instead of GFP_ATOMIC + possibly
GFP_DMA we always get GFP_DMA and no GFP_ATOMIC.
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
when stealing code from ati_remote for a GPL-driver of my usbradio (because of
its neat usb int transfers) I found out, that the inbuf is freed twice.
I don't have the ati-remote, so I don't know it is a problem at all, but it
looks strange to me anyway. Also I don't know if it has been fixed already in
newer kernel versions.
From: Patrick Boettcher <patrick.boettcher@desy.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This is a somewhat more comprehensive fix for the problem of devices
like the newer Zaurii ... or in this case some Motorola cell phones.
To recap, the problem's root cause is that these devices aren't using
standard USB class specifications for their network links, and so far
we've had to add lots of device-specific driver entries. The vendor
fix abuses the CDC MDLM descriptors (they _could_ have conformed to
the spec, but didn't) and defines a "Belcarra firmware" pseudo-class.
This patch recognizes that pseudo-class by the GUIDs in those descriptors,
and handles the devices that just use the Zaurus framing.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Modify the ASIX USB Ethernet code to make use of the new status
infrastructure in usbnet.
Additionally, add a link_reset() handler to the struct usbnet
structure to provide a generic means for a driver to perform link
reset tasks such as a determining link speed and setting
device flags accordingly.
Signed-off-by: David Hollis <dhollis@davehollis.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The patch below adjusts the MODALIAS generated by the usb hotplug
function to match the proposed change to scripts/mod/file2alias.c.
Signed-off-by: Roman Kagan <rkagan@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Another attempt at that...
The attached patch fixes the longstanding problem with USB bcdDevice
numeric ranges incorrectly converted into patterns for MODULE_ALIAS
generation. Previously it put both the lower and the upper limits into
the pattern, dlXdhY, making it impossible to fnmatch against except for
a few special cases, like dl*dh* or dlXdhX.
The patch makes it generate multiple MODULE_ALIAS lines covering the
whole range with fnmatch-able patterns. E.g. for a range between 0x0001
and 0x8345 it gives the following patterns:
000[1-9]
00[1-9]*
0[1-9]*
[1-7]*
8[0-2]*
83[0-3]*
834[0-5]
Since bcdDevice is 2 bytes wide = 4 digits in hex representation, the
max no. of patters is 2 * 4 - 1 = 7.
The values are BCD (binary-coded decimals) and not hex, so patterns
using a dash seem to be safe regardless of locale collation order.
The patch changes bcdDevice part of the alias from dlXdhY to dZ, but
this shouldn't have big compatibility issues because fnmatch()-based
modprobing hasn't yet been widely used. Besides, the most common (and
almost the only working) case of dl*dh* becomes d* and thus continues to
work.
The patch is against 2.6.12-rc2, applies to -mm3 with an offset. The
matching patch to fix the MODALIAS environment variable now generated by
the usb hotplug function follows.
Signed-off-by: Roman Kagan <rkagan@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch makes two needlessly global functions static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Phil Dibowitz wrote:
> 1. You're adding product IDs 1202, 1203, 1204, and 1205. 1203 was
> already there, but you remove it, OK, but 1205 is already there, so
> you'll need to fix that.
I was not removing 1203, it's just the extension of the bcd range. You are
right about 1205, as I wrote, it was a patch against 2.6.11.7. Attached is
a patch against 2.6.12-rc2.
> 2. I'm OK with the full bcd range if Apple is changing it on firmware
> revs... fine, but it's bcd, not hex... 0x9999 =)
I just copied from other entries. There're a lot 0xffffs in unusual_dev.h,
so I assumed it is correct. I changed it to 0x9999.
> 3. It's rather obnoxious to take the original submitter's credit away.
I didn't remove it, I changed it to "based on...". Because I changed
something (the range) in his entry, I thought it is the best to take the
responsibility but keep the origin. Anyway, in the new patch I did it in a
different way.
> 4. Your /proc/bus/usb/devices shows 1204, but I see no evidence 1202 is
> really an iPod.
I don't have an old iPod mini, but you find a lot of evidence here:
http://www.google.com/search?q=0x1202+ipod
Especially this one:
http://www.qbik.ch/usb/devices/showdescr.php?id=2737
> It also looks like 1205's entry is getting mangled, but I haven't
> attempted to apply the patch, so I'm not sure.
No, the patch was ok, but I agree it looks strange. It's not very
readable, because I cannot tell diff to work blockwise instead of
linewise. Because of the similarity of the entries, diff splits and merges
them. Anyway, the new patch "looks" better. ;-)
Signed-off-by: Sven Anderson <sven-linux@anderson.de>
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch is required to support cpu removal for IPF systems. Existing code
just fakes the real offline by keeping it run the idle thread, and polling
for the bit to re-appear in the cpu_state to get out of the idle loop.
For the cpu-offline to work correctly, we need to pass control of this CPU
back to SAL so it can continue in the boot-rendez mode. This gives the
SAL control to not pick this cpu as the monarch processor for global MCA
events, and addition does not wait for this cpu to checkin with SAL
for global MCA events as well. The handoff is implemented as documented in
SAL specification section 3.2.5.1 "OS_BOOT_RENDEZ to SAL return State"
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Found by Alexander Nyberg, improved by Bjorn Helgaas.
- Fix the incorrect argument to sizeof()
- looks like memcpy() code pass was dervived from code that used
copy_from_user(). But in this case we are doing to kernel space
to kernel space copy, so memcpy is the right routine, but it
doesn't return an error code.
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
The labels after the last put_user patch were misplaced so
exceptions on the real mov instructions would not be handled.
Noted by Brian Gerst <bgerst@didntduck.org>
We were forgetting to call sunsu_change_speed(). The reason
that replugging in the mouse cable "fixes things" is that
causes a BREAK interrupt which in turn caused a call to
sunsu_change_speed() which would get the chip setup properly.
Signed-off-by: David S. Miller <davem@davemloft.net>
Provide support for drivers/char/rtc.c ioctls in the
Mostek rtc driver as well as the Sparc specific RTCGET
and RTCSET.
This allows userspace to be much less messy. Currently
util-linux and other spots jump through hoops trying
various ioctl variants until it hits the right one whatever
driver actually being used supports.
Eventually all of this should move over to the genrtc.c
driver, but not today...
While we are here, fix up the register types for sparse.
Thanks to Frans Pop for helping point out this issue.
Signed-off-by: David S. Miller <davem@davemloft.net>
Use 'daddr' instead of &tmpl->id.daddr, since the latter
might be zero. Also, only perform the lookup when
tmpl->id.spi is non-zero.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add MSI test for chips that support MSI. If MSI test fails, it will
switch back to INTx mode and will print a message asking the user to
report the failure.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix a bug in tg3_set_eeprom() when the length is less than 4 and the
offset is not 4-byte aligned.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add support for the NVRAM lock-out feature for TPM in 5752. If lock-out
is enabled, certain NVRAM registers cannot be written to.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add bit definitions for the new GPIO3 in 5752. GPIO3 must be driven as
output when it is unused.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The 5752 A0 chip ID is wrong in hardware. The simplest way to workaround
it is to change it to the correct value in tp->pci_chip_rev_id. This
way, it is easier to check for the ASIC_REV_5752 in the rest of the
driver.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix tg3_set_power_state to drive GPIOs properly based on the
TG3_FLAG_EEPROM_WRITE_PROTECT flag. Some delays are also added after D0
and D3 power state changes.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Setup proper GPIO settings in tp->grc_local_ctrl before calling
tg3_set_power() state in tg3_get_invariants() and after chip reset.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Split the 1st half of tg3_phy_probe() into tg3_get_eeprom_hw_cfg() so
that the TG3_FLAG_EEPROM_WRITE_PROT can be determined before calling
tg3_set_power_state() in tg3_get_invariants(). This will allow
tg3_set_power_state() to drive the GPIOs correctly based on the config.
information in eeprom.
On the 5752, there are no pull-up resistors on the GPIO pins and it is
necessary to drive the unused GPIOs as output.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some minor 5752 fixes mostly for correctness and add 5752 PHY ID.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace existing ASIC_REV_5752 definition with ASIC_REV_5752_A0,
and add definition for ASIC_REV_5752_A1. Then, add ASIC_REV_5752_A1
to check for setting TG3_FLG2_5750_PLUS in tg3_get_invariants.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use check of TG3_FLG2_5750_PLUS in tg3_get_invariants to set
TG3_FLG2_5705_PLUS flag.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rewrite checks in tg3_get_invariants to use TG3_FLG2_5705_PLUS and
TG3_FLG2_5750_PLUS flags.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rewrite of a couple of troublesome multi-way if statements to use
TG3_FLG2_5705_PLUS flag.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace a number of two-way if statements checking for 5750, and/or
5752 to reference the newly-defined TG3_FLG2_5750_PLUS flag instead.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Define TG3_FLG2_5750_PLUS flag and set it in tg3_get_invariants for
ASIC_REV_5750 or ASIC_REV_5752.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Replace a number of three-way if statements checking for 5705, 5750,
and 5752 to reference the equivalent TG3_FLG2_5705_PLUS flag instead.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add proper entry for bcm5752 PCI ID to pci_ids.h, and use it in tg3.
I did this separately in case patches like this (i.e. new PCI IDs)
need to come from more "official" sources.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add hard-coded definition of bcm5752 PCI ID to tg3_pci_tbl.
Next patch will change entry to use pci_ids.h-based definition.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add ASIC_REV_5752 definition.
Track-down all references to ASIC_REV_5750 and mirror them with
references to the newly defined ASIC_REV_5752.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
I.e. not using skb->dev as a way to pass the parameter used to fill...
skb->dev :-)
Also to get the _type_trans open coded sequence grouped, next changesets
will introduce ax25_type_trans.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
While we're at it, lets also replace KERN_INFO by KERN_EMERG to
make sure the user gets to see it.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch to arch/i386/kernel/cpu/amd.c relies on the variable
cpu_core_id which is defined in i386/kernel/smpboot.c. This means it is
only present if CONFIG_X86_SMP is defined, not CONFIG_SMP (alternative
SMP harnesses won't have it, which is why it breaks voyager).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix non-legacy multichannel ISO receive, broken by Parag Wardukar's
allocation fix. Multichannel ISO receive still sucks; it should be possible
to use both legacy and non-legacy modes at the same time, but with this
patch, things are no worse than they were in 2.6.11 and allocation is
still done at the correct time.
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- Print the correct value in the DBGMSG in dma_rcv_tasklet().
See OHCI 1.1 section 8.7, page 103 ff.
- Print tlabels as %d everywhere.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Jody McIntyre <scjody@steamballoon.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I noticed a case in sr_ioctl.c's sr_get_mcn where a buffer is
allocated, but the pointer isn't checked for null.
Signed-off-by: Nate Dailey <nate.dailey@stratus.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Make transport-functions structure non-static. Replace #include of
scsi_transport.h with a forward declaration.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The ia64-version of fls() never worked as intended (the bitnumbering
was off by 1 and fls(0) was undefined). This patch fixes the problem
by using a popcnt-based fls(), which on McKinley-derived cores is
slightly faster than both ia64_fls() and generic_fls(). The resulting
code, however, is bigger (7-8 bundles instead of about 3 bundles).
Also switch ia64_popcnt() to __builtin_popcountl() for GCC v3.4 or
newer since the compiler can predicate that and schedule it better.
Thanks to Simon Derr and Matt Mackall for tracking down this bug.
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
We do not longer use DLT_LINUX_SLL for activ/pass filters but
DLT_PPP_WITHDIRECTION witch need 1 as outbound flag.
Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The new out of line put_user() assembly on x86_64 changes %rcx without
telling GCC about it causing things like:
http://bugme.osdl.org/show_bug.cgi?id=4515
See to it that %rcx is not changed (made it consistent with get_user()).
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: ak@suse.de
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
My version of gcc doesn't warn about this error (declaration in the
middle of a set of statements).
The fix is simple (this also corrects return code; for init functions it
should be zero or error).
The following patch just makes the header part of the skb writeable.
This is needed since we modify the IP headers just a few lines below.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Here is a revised alternative that uses BUG_ON/WARN_ON
(as suggested by Herbert Xu) to eliminate NET_CALLER.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Be kind to userspace and don't force them to hardcode protocol
families just to have it changed again once we support routing
rules for more than one protocol family.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
While looking at this problem I noticed that IPv6 was sometimes
looking at inet->recverr which is bogus. Here is a patch to
correct that and use np->recverr.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
So here is a patch that introduces skb_store_bits -- the opposite of
skb_copy_bits, and uses them to read/write the csum field in rawv6.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Once all the MMU architectures define FIRST_USER_ADDRESS, remove hack from
mmap.c which derived it from FIRST_USER_PGD_NR.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Replace misleading definition of FIRST_USER_PGD_NR 0 by definition of
FIRST_USER_ADDRESS 0 in all the MMU architectures beyond arm and arm26.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
ARM26 define FIRST_USER_ADDRESS as PAGE_SIZE (beyond the machine vectors when
they are mapped low), and use that definition in place of locally defined
MIN_MAP_ADDR. Previously, ARM26 permitted user mappings at 0 if the machine
vectors were mapped high; but that's inconsistent with ARM, and
FIRST_USER_ADDRESS would then have to be determined at runtime. Let's fix it
at PAGE_SIZE throughout the architecture.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
ARM define FIRST_USER_ADDRESS as PAGE_SIZE (beyond the machine vectors when
they are mapped low), and use that definition in place of locally defined
MIN_MAP_ADDR.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove use of FIRST_USER_PGD_NR from sys_mincore: it's inconsistent (no other
syscall refers to it), unnecessary (sys_mincore loops over vmas further down)
and incorrect (misses user addresses in ARM's first pgd).
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The patches to free_pgtables by vma left problems on any architectures which
leave some user address page table entries unencapsulated by vma. Andi has
fixed the 32-bit vDSO on x86_64 to use a vma. Now fix arm (and arm26), whose
first PAGE_SIZE is reserved (perhaps) for machine vectors.
Our calls to free_pgtables must not touch that area, and exit_mmap's
BUG_ON(nr_ptes) must allow that arm's get_pgd_slow may (or may not) have
allocated an extra page table, which its free_pgd_slow would free later.
FIRST_USER_PGD_NR has misled me and others: until all the arches define
FIRST_USER_ADDRESS instead, a hack in mmap.c to derive one from t'other. This
patch fixes the bugs, the remaining patches just clean it up.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Once we're strict about clearing away page tables, hugetlb_prefault can assume
there are no page tables left within its range. Since the other arches
continue if !pte_none here, let i386 do the same.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While dabbling here in mmap.c, clean up mysterious "mpnt"s to "vma"s.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
ia64 and sparc64 hurriedly had to introduce their own variants of
pgd_addr_end, to leapfrog over the holes in their virtual address spaces which
the final clear_page_range suddenly presented when converted from pgd_index to
pgd_addr_end. But now that free_pgtables respects the vma list, those holes
are never presented, and the arch variants can go.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
ia64 and ppc64 had hugetlb_free_pgtables functions which were no longer being
called, and it wasn't obvious what to do about them.
The ppc64 case turns out to be easy: the associated tables are noted elsewhere
and freed later, safe to either skip its hugetlb areas or go through the
motions of freeing nothing. Since ia64 does need a special case, restore to
ppc64 the special case of skipping them.
The ia64 hugetlb case has been broken since pgd_addr_end went in, though it
probably appeared to work okay if you just had one such area; in fact it's
been broken much longer if you consider a long munmap spanning from another
region into the hugetlb region.
In the ia64 hugetlb region, more virtual address bits are available than in
the other regions, yet the page tables are structured the same way: the page
at the bottom is larger. Here we need to scale down each addr before passing
it to the standard free_pgd_range. Was about to write a hugely_scaled_down
macro, but found htlbpage_to_page already exists for just this purpose. Fixed
off-by-one in ia64 is_hugepage_only_range.
Uninline free_pgd_range to make it available to ia64. Make sure the
vma-gathering loop in free_pgtables cannot join a hugepage_only_range to any
other (safe to join huges? probably but don't bother).
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There's only one usage of MM_VM_SIZE(mm) left, and it's a troublesome macro
because mm doesn't contain the (32-bit emulation?) info needed. But it too is
only needed because we ignore the end from the vma list.
We could make flush_pgtables return that end, or unmap_vmas. Choose the
latter, since it's a natural fit with unmap_mapping_range_vma needing to know
its restart addr. This does make more than minimal change, but if unmap_vmas
had returned the end before, this is how we'd have done it, rather than
storing the break_addr in zap_details.
unmap_vmas used to return count of vmas scanned, but that's just debug which
hasn't been useful in a while; and if we want the map_count 0 on exit check
back, it can easily come from the final remove_vm_struct loop.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Recent woes with some arches needing their own pgd_addr_end macro; and 4-level
clear_page_range regression since 2.6.10's clear_page_tables; and its
long-standing well-known inefficiency in searching throughout the higher-level
page tables for those few entries to clear and free: all can be blamed on
ignoring the list of vmas when we free page tables.
Replace exit_mmap's clear_page_range of the total user address space by
free_pgtables operating on the mm's vma list; unmap_region use it in the same
way, giving floor and ceiling beyond which it may not free tables. This
brings lmbench fork/exec/sh numbers back to 2.6.10 (unless preempt is enabled,
in which case latency fixes spoil unmap_vmas throughput).
Beware: the do_mmap_pgoff driver failure case must now use unmap_region
instead of zap_page_range, since a page table might have been allocated, and
can only be freed while it is touched by some vma.
Move free_pgtables from mmap.c to memory.c, where its lower levels are adapted
from the clear_page_range levels. (Most of free_pgtables' old code was
actually for a non-existent case, prev not properly set up, dating from before
hch gave us split_vma.) Pass mmu_gather** in the public interfaces, since we
might want to add latency lockdrops later; but no attempt to do so yet, going
by vma should itself reduce latency.
But what if is_hugepage_only_range? Those ia64 and ppc64 cases need careful
examination: put that off until a later patch of the series.
What of x86_64's 32bit vdso page __map_syscall32 maps outside any vma?
And the range to sparc64's flush_tlb_pgtables? It's less clear to me now that
we need to do more than is done here - every PMD_SIZE ever occupied will be
flushed, do we really have to flush every PGDIR_SIZE ever partially occupied?
A shame to complicate it unnecessarily.
Special thanks to David Miller for time spent repairing my ceilings.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I can't use list.h, since sk_buff doesn't have a list_head but instead
has two struct sk_buff pointers, and I want to avoid any extra memory
allocation.
send outgoing packets in order
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
add note about the need for deadlock-free sk_buff allocation
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
document env var for specifying number of partitions per dev
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
handle distros that have a udev rules file instead of dir
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kobject_add() and kobject_del() don't emit hotplug events anymore.
We need to do it ourselves now.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kobject_add() and kobject_del() don't emit hotplug events anymore.
We need to do it ourselves now.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kobject_add() and kobject_del() don't emit hotplug events anymore. Do it
ourselves if we are finished populating the device directory.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kobject_add() and kobject_del() don't emit hotplug events anymore. Do it
ourselves if we are finished populating the device directory.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kobject_add() and kobject_del() don't emit hotplug events anymore. Do it
ourselves if we are finished populating the device directory.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
kobject_add() and kobject_del() don't emit hotplug events anymore.
The user should do it itself if it has finished populating the device
directory.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
- Fix prototypes for debugfs functions (in configurations where
debugfs is disabled).
Signed-off-by: Michal Ostrowski <mostrows@speakeasy.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The current <linux/debugfs.h> include file is a little fragile in that
it is not self-contained and hence may cause compile warnings or
errors depending on the files included before it, the kernel config
and the architecture. This patch makes things a little more robust by:
- including <linux/types.h> to get definitions of u32, mode_t, and so on.
- forward declaring struct file_operations.
- including <linux/err.h> when CONFIG_DEBUG_FS is not set
The last change is particularly useful, as a kernel developer is
likely to build with debugfs always enabled and never see the build
breakage cased if debugfs is disabled.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Without the attached patch, the ver_linux script gives
the following if udev utils are not present.
./scripts/ver_linux: line 90: udevinfo: command not found
The patch causes ver_linux to be silent in the case of
no udevinfo command.
Signed-off-by: Steven Cole <elenstev@mesatop.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
platform_add_devices can be used from within modules, so it should be
exported. This can for example happen if you have hotpluggable firmware in
an FPGA on a system on chip processor; in our case the FPGA is probed for
devices and the FPGA base code registers the devices it has found with the
kernel.
(akpm: I think this is reasonable from a licensing POV: it's unlikely that
anyone would be interested in merging such specialised modules into mainline,
and it's a GPL export).
Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
sysfs: allow changing the permissions for already created attributes
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
On Tue, 2005-03-15 at 09:25 +0100, Hannes Reinecke wrote:
> The current implementation of the firmware class breaks a fundamental
> assumption in udevd: that the physical device can be initialised fully
> prior to executing the next event for that device.
Here we add a TIMEOUT value to the hotplug environment of the firmware
requesting event. I will adapt udevd not to wait for anything else, if
it finds a TIMEOUT key.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
The it87 and via686a hardware monitoring drivers each create a sysfs
file named "alarms" in R/W mode, while they should really create it in
read-only mode. Since we don't provide a store function for these files,
write attempts to these files will do something undefined (I guess) and
bad (I am sure). My own try resulted in a locked terminal (where I
attempted the write) and a 100% CPU load until next reboot.
As a side note, wouldn't it make sense to check, when creating sysfs
files, that readable files have a non-NULL show method, and writable
files have a non-NULL store method? I know drivers are not supposed to
do stupid things, but there is already a BUG_ON for several conditions
in sysfs_create_file, so maybe we could add two more?
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Here comes a small cleanup patch for the via686a driver. I noticed the
following two non-fatal problems:
1* The device parent is explicitely set, but it's not needed because the
i2c core will do as the client is registered.
2* snprintf is used where strlcpy would suffice.
Fixing them brings the via686a driver in line with what other similar
drivers do.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Real fix for big endian machines - crc must be calculated
using little endian byte order.
Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Updates to the Ethernet/RNDIS gadget driver (mostly for RNDIS):
- Fix brown-paper bag goof with RNDIS packet TX ... the wrong length
field got set, so Windows would ignore data packets it received.
- More consistent handling of CDC output filters (but not yet hooking
things up so RNDIS uses the mechanism).
- Zerocopy RX for RNDIS packets too (saving CPU cycles).
- Use the pre-allocated interrupt/status request and buffer, rather
than allocating and freeing one of each every few seconds (which
could fail).
- Some more "sparse" tweaks, making both dual-speed and single-speed
configurations happier.
- RNDIS speeds are reported in units of 100bps, not bps.
Plus two minor cleanups (whitespace, messaging).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*,
there's no need to check a pointer for NULL before calling kfree() on it.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Index: gregkh-2.6/drivers/usb/class/audio.c
===================================================================
Checking for NULL before calling kfree() is redundant. This patch removes
these redundant checks and also makes a few tiny whitespace changes.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Please accept the attached patch which adds the vendorid 0x0745 and
modelid 0x0001 (ID 0745:0001) "Syntech Information Co., Ltd."
The device is an USB IR cradle for a barcode scanner (CPT-8001C) from
Cipherlab.
From: Peter Favrholdt <pfavr@mip.sdu.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -u kernel-source-2.6.11/drivers/usb/serial/pl2303.c ../kernel-source-2.6.11/drivers/usb/serial/pl2303.c
I'm attaching a patch to fix status when using Siemens X65
mobile. This mobile use first byte instead of normal UART_STATE
byte.
From: Flavio Leitner <fbl@conectiva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Index: gregkh-2.6/drivers/usb/serial/pl2303.c
===================================================================
It's possible to unplug usb device and do tiocmset() and tiocmget() without
valid interface in pl2303 module.
The patch below check this and return -ENODEV if interface was removed.
From: Flavio Leitner <fbl@conectiva.com.br>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -purN linux-05-04-11/drivers/usb/serial/pl2303.c linux-05-04-11.usb/drivers/usb/serial/pl2303.c
In response to complaints about excessive latency in the uhci-hcd driver
I'm planning to convert it to a top-half/bottom-half design. It turns out
that to do this, the USB API has to be modified slightly since the driver
will not be able to meet one of the guarantees in the current API. This
patch changes some kerneldoc, specifying the weaker guarantee.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This adds a quirk to the OHCI driver that lets it work with an old
Compaq implementation. It also removes some needless strings from
the non-debug version of the driver.
Signed-off-by: Chris Clayton <chris_clayton@f1internet.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Hmm, another case of a Zaurus ROM not telling the expected conformance lie;
this patch handles the lies told by the SL5600.
From: bender647@gmail.com
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
the attached patch adds another USB device ID to the list. Seems the
device is known under multiple IDs.
Signed-off-by: Thomas Winischhofer <thomas@winischhofer.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch changes the delay for the US_FL_GO_SLOW patch from 110us to 125.
Some delays need this extra delay includign Jan De Luyck's drive which spawned
the original increase from 110 to 110us. 125 is a microframe, so this delay
seems to make sense more than just be a random delay (thanks to David Brownell
for pointing that out after my original patch).
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Index: gregkh-2.6/drivers/usb/storage/transport.c
===================================================================
On ppc64:
drivers/usb/net/usbnet.c: In function `skb_return':
drivers/usb/net/usbnet.c:429: warning: int format, different type arg (arg 3)
drivers/usb/net/usbnet.c:429: warning: int format, different type arg (arg 3)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -puN drivers/usb/net/usbnet.c~usbnet-printk-warning-fix drivers/usb/net/usbnet.c
I am sorry that the last patch about 32 bit compat ioctl on
64 bit kernel actually breaks the usbdevfs. That is on the current
BK tree. I am retarded.
Here is the patch to fix it. Tested with USB hard disk and webcam
in both 32bit compatible mode and native 64bit mode.
Again, sorry about that.
From: Christopher Li <chrisl@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This reverts a recent change to usb_set_interface(). The change worked
around a quirk in certain devices, but doing this in usbcore creates
needless regressions for other devices. More appropriate fixes won't
put such handling in usbcore.
Basically it's tricky to do a full software reset of USB device state, since
the devices don't all act the same. This adds a note to the kerneldoc for
the usb_reset_configuration() call to highlight the quirk this was working
around: endpoint data toggles not being reset.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
First patch incorrectly changed state of the wait-queue usage to
TASK_UNINTERRUPTIBLE. Reverted to TASK_INTERRUPTIBLE.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This patch includes minor "sparse -Wbitwise" updates for the PCI based
HCDs. Almost all of them involve just changing the second parameter of the
suspend() method to a pm_message_t ... the others relate to how the EHCI
code walks in-memory data structures. (There's a minor bug fixed there too
... affecting the big-endian sysfs async schedule dump.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Index: gregkh-2.6/drivers/usb/core/hcd.h
===================================================================
This is the first of a few installments of PM API updates to match the
recent switch to "pm_message_t". This installment primarily affects
USB device drivers (for USB interfaces), and it changes the handful of
drivers which currently implement suspend methods:
- <linux/usb.h> and usbcore, signature change
- Some drivers only changed the signature, net effect this just
shuts up "sparse -Wbitwise":
* hid-core
* stir4200
- Two network drivers did that, and also grew slightly more
featureful suspend code ... they now properly shut down
their activities. (As should stir4200...)
* pegasus
* usbnet
Note that the Wake-On-Lan (WOL) support in pegasus doesn't yet work; looks
to me like it's missing a request to turn it on, vs just configuring it.
The ASIX code in usbnet also has WOL hooks that are ready to use; untested.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Index: gregkh-2.6/drivers/net/irda/stir4200.c
===================================================================
This has a variety of updates to the shared suspend/resume code for
PCI based USB host controllers.
- Cope with pm_message_t replacing the target system state.
This is actually a loss of functionality; PCI D1 and D2
states will no longer be used, and it's no longer knowable
that D3cold is on the way so power will be lost.
- Most importantly, some of the resume paths are reworked and
cleaned up. They're now an exact mirror of suspend paths,
and more care is taken to ensure the hardware is reactivated
before the hardware re-enables interrupts.
Plus comment and diagnostic cleanups; there are some nasty cases here
especially combined with swsusp, now they're somewhat commented.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -puN drivers/usb/core/hcd-pci.c~usb-resume-fixes drivers/usb/core/hcd-pci.c
With older gcc's:
In file included from drivers/usb/class/cdc-acm.c:63:
include/linux/usb_cdc.h:117: field `bDetailData' has incomplete type
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -puN include/linux/usb_cdc.h~usb_cdc-build-fix include/linux/usb_cdc.h
Here's a tiny patch to add support for the Tapwave Zodiac (for
2.6.11.6). I've been meaning to send it in for a while but kept
upgrading my kernel and losing the changes :-) I own the device and it
works fine with the latest pilot-link beta.
From: Larry Battraw <lbattraw@insightbb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Thanks to Jamieson Becker <jamie@jamiebecker.com> for the info
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff -Naur -X dontdiff-osdl tmp/linux-2.6.12-rc2/drivers/usb/serial/visor.h linux-2.6/drivers/usb/serial/visor.h
Like Alpha, sparc64's struct stat was defined before we had the
nanosecond et al. fields added. So like Alpha I have to cons up a
struct stat64 to get this stuff. I'll work on the glibc bits soon.
Also, we were forgetting to fill in the nanosecond fields in the sparc
compat stat64 syscalls.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Now that we export all the parameters, this is easy to do.
It also means that we can dump about 2000 lines of code that
were dedicated to doing this internally.
Additionally, this removes all the aic7xxx driver abuse
of SCSI timers which were embedded in the DV routines.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This is just a simplistic patch to export all of the
aic7xxx internal transport parameters via the SPI
transport class. It doesn't actually alter the way the
driver works at all.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
CC [M] drivers/scsi/qla2xxx/qla_attr.o
drivers/scsi/qla2xxx/qla_attr.c: In function `qla2x00_sysfs_write_fw_dump':
drivers/scsi/qla2xxx/qla_attr.c:65: warning: implicit declaration of function `vfree'
drivers/scsi/qla2xxx/qla_attr.c:83: warning: implicit declaration of function `vmalloc'
drivers/scsi/qla2xxx/qla_attr.c:83: warning: cast to pointer from integer of different size
Also remove spurious inclusion of linux/version.h
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch contains the following cleanups:
- make some needlessly global functions static
- remove one more kernel 2.2 #ifdef
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
these have been wrappers for the generic dma direction bits since 2.5.x.
This patch converts the few remaining drivers and removes the macros.
Arjan noticed there's some hunk in here that shouldn't. Updated patch
below:
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Don't use cmd->request->nr_hw_segments as it may not be initialized
(SG_IO in particular bypasses anything that initializes this and just
uses scsi_do_req to insert a scsi_request directly on the head of the
queue) and a bogus value here can trip up the checks to make sure that
the number of segments will fit in the queue ring buffer, resulting in
commands that are never completed.
Fix up several issues with PCI DMA mapping and failure to check return
values on the mappings.
Make the check for space in the ring buffer happen after the DMA mapping
is done since any checks done before the mapping has taken place are
bogus.
Doug Ledford <dledford@redhat.com>.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Add initial support for FC remote port infrastructure.
o Use fc_remote_port...() registration and block/unlock
functions.
o Consolidate 'attribute' (fc-remote/sysfs) helpers into
new qla_attr.c file.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Remove internal command queuing from the driver. As is, this
driver cannot tolerate cable-pulls as I/Os will begin to fail
by the upper layers.
o Should be used in conjuction with the
11-fc_rport_adds_2.diff patch.
o Removes qla_listops.h file -- no longer needed.
Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This adds 32-bit compatibility for mounting an NFSv4 mount on a 64-bit
kernel (such as happens with PPC64).
The problem is that the mount data for the NFS4 mount process includes
auxilliary data pointers, probably because the NFS4 mount data may
conceivably exceed PAGE_SIZE in size - thus breaking against the hard
limit imposed by sys_mount().
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes a deadlock on the dcache lock detected during testing at IBM
by moving the logging of the current executable information from the
SELinux avc_audit function to audit_log_exit (via an audit_log_task_info
helper) for processing upon syscall exit.
For consistency, the patch also removes the logging of other
task-related information from avc_audit, deferring handling to
audit_log_exit instead.
This allows simplification of the avc_audit code, allows the exe
information to be obtained more reliably, always includes the comm
information (useful for scripts), and avoids including bogus task
information for checks performed from irq or softirq.
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch makes scsi_send_eh_cmnd() use sdev and shost instead of
referencing them through scmd-> everytime.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This patch removes volatile qualifier from scsi_device->device_busy,
Scsi_Host->host_busy and ->host_failed as the volatile qualifiers
don't serve any purpose now. While at it, convert those fields from
unsigned short to unsigned int as suggested by Christoph.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
We have a DID_IMM_RETRY to require a retry at once, but we could do with
a DID_REQUEUE to instruct the mid-layer to treat this command in the
same manner as QUEUE_FULL or BUSY (i.e. halt the submission until
another command returns ... or the queue pressure builds if there are no
outstanding commands).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Also broken design in its compat handlers - CONFIG_COMPAT doesn't
mean that there should be no native ioctls.
Signed-off-by: Andi Kleen <ak@muc.de>
Reworked with comments from Markus Lidel by:
Christoph Hellwig <hch@infradead.org>
Rejections fixed and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fix up two drivers that incorrectly were using the old return values for
their new-style EH methods and kill off scsi_obsolete.h that defined the
constants. The initio driver has all these constansts defined locally
and uses them internally, I'll fix that up some time later.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
scsi_cmnd->serial_number_at_timeout doesn't serve any purpose
anymore. All serial_number == serial_number_at_timeout tests
are always true in abort callbacks. Kill the field. Also, as
->pid always equals ->serial_number and ->serial_number
doesn't have any special meaning anymore, update comments
above ->serial_number accordingly. Once we remove all uses of
this field from all lldd's, this field should go.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
scsi_cmnd->internal_timeout field doesn't have any meaning
anymore. Kill the field.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
We have the scsi_print_* functions in the proper namespace for a long
time now and there weren't a lot users left.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The compat routine to copy over this data structure was not
handling SI_POLL correctly, breaking various fcntl() variants
in compat tasks.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We were flushing the D-cache excessively for ptrace() processing
and this makes debugging threads so slow as to be totally unusable.
All process page accesses via ptrace() go via access_process_vm().
This routine, for each process page, uses get_user_pages(). That
in turn does a flush_dcache_page() on the child pages before we
copy in/out the ptrace request data.
Therefore, all we need to do after the data movement is:
1) Flush the D-cache pages if the kernel maps the page to a different
color than userspace does.
2) If we wrote to the page, we need to flush the I-cache on older cpus.
Previously we just flushed the entire cache at the end of a ptrace()
request, and that was beyond stupid.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
SunOS aparently had this weird PTRACE_CONT semantic which
we copied. If the addr argument is something other than
1, it sets the process program counter to whatever that
value is.
This is different from every other Linux architecture, which
don't do anything with the addr and data args.
This difference in particular breaks the Linux native GDB support
for fork and vfork tracing on sparc and sparc64.
There is no interest in running SunOS binaries using this weird
PTRACE_CONT behavior, so just delete it so we behave like other
platforms do.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A couple message queue system call entries for compat tasks
were not using the necessary compat_sys_*() functions, causing
some glibc test cases to fail.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This case actually can get exercised a lot during an ELF
coredump of a process which contains a lot of non-COW'd
anonymous pages. GDB has this test case which in partiaular
creates near terabyte process full of ZERO_PAGEes. It takes
forever to just walk through the page tables because of
all of these spurious cache flushes on sparc64.
With this change it takes only a second or so.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This reverts a fs/char_dev.c patch that was merged into BK on March 3.
The problem is that it breaks things ... __register_chrdev_region() has
a block of code, commented "temporary" for over two years now, which
fails rudely during PCMCIA initialization or other register_chrdev()
calls, because it doesn't "degrade to linked list". This keeps whole
subsystems from working.
A real fix to that "temporary" code should be possible, using some better
scheme to allocate major numbers, but it's not something I want to spend
time on just now.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Convert ARM bitop assembly to a macro. All bitops follow the same
format, so it's silly duplicating the code when only one or two
instructions are different.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Fix show_regs() to provide a backtrace. Provide a new __show_regs()
function which implements the common subset of show_regs() and die().
Add prototypes to asm-arm/system.h
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
The footbridge ISA RTC was being initialised before we had setup the
kernel timer. This caused a divide by zero error when the current
time of day is set. Resolve this by initialising the RTC after
the kernel timer has been initialised.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
We have a DID_IMM_RETRY to require a retry at once, but we could do with
a DID_REQUEUE to instruct the mid-layer to treat this command in the
same manner as QUEUE_FULL or BUSY (i.e. halt the submission until
another command returns ... or the queue pressure builds if there are no
outstanding commands).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Also broken design in its compat handlers - CONFIG_COMPAT doesn't
mean that there should be no native ioctls.
Signed-off-by: Andi Kleen <ak@muc.de>
Reworked with comments from Markus Lidel by:
Christoph Hellwig <hch@infradead.org>
Rejections fixed and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Fix up two drivers that incorrectly were using the old return values for
their new-style EH methods and kill off scsi_obsolete.h that defined the
constants. The initio driver has all these constansts defined locally
and uses them internally, I'll fix that up some time later.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
scsi_cmnd->serial_number_at_timeout doesn't serve any purpose
anymore. All serial_number == serial_number_at_timeout tests
are always true in abort callbacks. Kill the field. Also, as
->pid always equals ->serial_number and ->serial_number
doesn't have any special meaning anymore, update comments
above ->serial_number accordingly. Once we remove all uses of
this field from all lldd's, this field should go.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
scsi_cmnd->internal_timeout field doesn't have any meaning
anymore. Kill the field.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
We have the scsi_print_* functions in the proper namespace for a long
time now and there weren't a lot users left.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
- add a comment to the device structure that the device_busy field
is now protected by the request_queue->queue_lock
- null out sdev->request_queue after the queue is released to trap
any (and there shouldn't be any) use after the queue is freed.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The current problem seen is that the queue lock is actually in the
SCSI device structure, so when that structure is freed on device
release, we go boom if the queue tries to access the lock again.
The fix here is to move the lock from the scsi_device to the queue.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This driver has had it's own different infrastructure for doing this for
ages, but it's time it used the common one.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The attachment combines the most recent patch from
Yum Rayan <yum.rayan@gmail.com> (to reduce sg stack
usage), Adrian Bunk <bunk@stusta.de> (to fix check
after use) and me (fix elapsed time calculation
(duration) on ia64 machines).
I have modified the patch from Yum Rayan so kmalloc()
in sg_read() is only called for the (rare) code paths
that need them.
Changelog:
- reduce stack usage in sg_ioctl() and sg_read()
- fix check after use in sg_mmap()
- hold duration internally in milliseconds and
check current time later than held time
Signed-off-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
The conditions that cause these calls to MD_BUG are not kernel bugs, just
oddities in what userspace is asking for.
Also convert analyze_sbs to return void, and the value it returned was
always 0.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There is a tiny race when de-registering an MD thread, in that the thread
could disappear before it is set a SIGKILL, causing send_sig to have
problems.
This is most easily closed by holding tasklist_lock between enabling the
thread to exit (setting ->run to NULL) and telling it to exit.
(akpm: ick. Needs to use kthread API and stop using signals)
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch does the long overdue updates to MAINTAINERS file for aty128fb
and radeonfb.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix the formatting of some comments in 8250.c, and add a note that the
register_serial / unregister_serial shouldn't be used in new code.
We do this here in preference to adding to linux/serial.h, since that is used
by a number of non-8250 drivers which pretend to be 8250. It is not known
whether it would be appropriate to do so.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We were failing to close on an error path, resulting in a leak of struct files
which could take a v4 server down fairly quickly.... So call
nfs4_close_delegation instead of just open-coding parts of it.
Simplify the cleanup on delegation failure while we're at it.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes the lots-of-fsx-linux-instances-cause-a-slow-leak bug.
It's been there since 2.6.6, caused by:
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.5/2.6.5-mm4/broken-out/jbd-move-locked-buffers.patch
That patch moves under-writeout ordered-data buffers onto a separate journal
list during commit. It took out the old code which was based on a single
list.
The old code (necessarily) had logic which would restart I/O against buffers
which had been redirtied while they were on the committing transaction's
t_sync_datalist list. The new code only writes buffers once, ignoring
redirtyings by a later transaction, which is good.
But over on the truncate side of things, in journal_unmap_buffer(), we're
treating buffers on the t_locked_list as inviolable things which belong to the
committing transaction, and we just leave them alone during concurrent
truncate-vs-commit.
The net effect is that when truncate tries to invalidate a page whose buffers
are on t_locked_list and have been redirtied, journal_unmap_buffer() just
leaves those buffers alone. truncate will remove the page from its mapping
and we end up with an anonymous clean page with dirty buffers, which is an
illegal state for a page. The JBD commit will not clean those buffers as they
are removed from t_locked_list. The VM (try_to_free_buffers) cannot reclaim
these pages.
The patch teaches journal_unmap_buffer() about buffers which are on the
committing transaction's t_locked_list. These buffers have been written and
I/O has completed. We can take them off the transaction and undirty them
within the context of journal_invalidatepage()->journal_unmap_buffer().
Acked-by: "Stephen C. Tweedie" <sct@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Correct unwinding in error path of mthca_init_icm().
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Decouple table of HCA features from exact HCA device type. Add a current FW
version field so we can warn when someone is using old FW. Add support for
new MT25204 HCA.
Remove the warning about mem-free support, since it should be pretty solid at
this point.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix RDMA in mem-free mode: we need to make sure that the RDMA context memory
is mapped for the HCA.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Update initialization of receive queue to match new documentation. This
change is required to support new MT25204 HCA.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Clean up mem-free mode support by introducing mthca_is_memfree() function,
which encapsulates the logic of deciding if a device is mem-free.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Minor tweaks to firmware command handling: kill off an unused get of a value,
and add a little more info to debug output.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Implement fast memory regions (FMRs), where the driver writes directly into
the HCA's translation tables rather than requiring a firmware command. For
Tavor, MTTs for FMR are separate from regular MTTs, and are reserved at driver
initialization. This is done to limit the amount of virtual memory needed to
map the MTTs. For Arbel, there's no such limitation, and all MTTs and MPTs
may be used for FMR or for regular MR.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Split Tavor and Arbel/mem-free index<->hw key munging routines, so that FMR
implementation can call correct implementation without testing HCA type (which
it already knows).
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add mthca_table_find() function, which returns the lowmem address of an entry
in a mem-free HCA's context tables. This will be used by the FMR
implementation.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add code for SYNC_TPT firmware command, which will be used by FMR
implementation.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add mthca_write64_raw() function, which will be used to write FMR entries that
are in ioremapped PCI memory.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Encapsulate the buddy allocator used for MTT segments. This cleans up the
code and also gets us ready to add FMR support.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Make address handle verbs usable from interrupt context.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix bug in MTT allocation in mem-free mode.
I misunderstood the MTT size value returned by the firmware -- it is really
the size of a single MTT entry, since mem-free mode does not segment the MTT
as the original firmware did. This meant that our MTT addresses ended up
being off by a factor of 8. This meant that our MTT allocations might
overlap, and so we could overwrite and corrupt earlier memory regions when
writing new MTT entries.
We fix this by always using our 64-byte MTT segment size. This allows some
simplification of the code as well, since there's no reason to put the MTT
segment size in a variable -- we can always use our enum value directly.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add code to support RDMA and atomic send work requests in mem-free mode.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
CQ numbers are only 24 bits, so only print 6 hex digits and mask off reserved
part when reporting a CQ event.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On error path, only free doorbell records if we're in mem-free mode.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Print IRQ number when NOP command interrupt test fails to help debugging.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Release mutex on error return path from mthca_alloc_db().
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix error handling in MR allocation for mem-free mode: mthca_free must get an
MR index, not a key.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Doorbell record pages are allocated in HCA page size chunks (always 4096
bytes), so we need to divide by 4096 and not PAGE_SIZE when figuring out how
many pages we'll need space for.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It's cleaner to kfree mthca_mr, and not rely on the fact that ib_mr is the
first field in mthca_mr.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The first buffer of a memory region is not required to be page-aligned, so
don't return an error if it's not.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When posting a work request with immediate data, put the immediate data in the
immediate data field of the hardware's work request (rather than overwriting
the flags field).
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix calculation of rdb_shift by using original number of QPs, not
their slot in profile[] (which will be rearranged when we sort it).
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Implement more of the device_query method in mthca.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In mem-free mode, when allocating memory regions, make sure that the HCA has
context memory mapped to cover the virtual space used for the MPT and MTTs
being used.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix handling of MAD agent registrations with mgmt_class == 0. In this case
ib_umad should pass a NULL registration request to the MAD core rather than a
request with mgmt_class set to 0.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Mask bits correctly from jhash result in ib_fmr_hash() so that the
computed bucket index is within our hash table. This fixes an SDP
crash.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Replace the *wc field in ib_mad_recv_wc from pointing to a structure on the
stack to one allocated with the received MAD buffer. This allows a client to
access the *wc field after their receive completion handler has returned.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Update IPoIB documentation now that multicast debugging files have moved from
ipoibdebugfs to debugfs.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Convert IPoIB to use debugfs instead of its own custom debugging filesystem.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Correct and simplify calculation of static rate. We need to round up the
quotient of (local_rate - path_rate) / path_rate. To round up we add
(path_rate - 1) to the numerator, so the quotient simplifies to (local_rate -
1) / path_rate.
No idea how I came up with the old formula.
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Set skb->mac.raw on receive. This fixes crashes when this is
dereferenced, for example by netfilter or when PF_PACKET is used.
Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use netdev as the mailing list contact instead of the mostly dead linux-net
list.
Signed-off-by: Horms <horms@verge.net.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Both the RiscPC and (optionally) EBSA285 have floppy disk support. Allow this
option to be selected on these ARM platforms again.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch hides reparent_to_init(). reparent_to_init() should only be
called by daemonize().
Signed-off-by: Coywolf Qi Hunt <coywolf@lovecn.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Both maintainer email addresses are bouncing and the web address is no
longer valid.
Seems to be a good time to remove the entry.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Compiling SOUND_AD1889 with PCI=n results in the following compile
error:
sound/built-in.o(.text+0x24f0c): In function `ad1889_remove':
: undefined reference to `pci_release_region'
This patch adds the missing dependency on PCI.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
gcc-4 warns with
include/linux/cpuset.h:21: warning: type qualifiers ignored on function
return type
cpuset_cpus_allowed is declared with const
extern const cpumask_t cpuset_cpus_allowed(const struct task_struct *p);
First const should be __attribute__((const)), but the gcc manual
explains that:
"Note that a function that has pointer arguments and examines the data
pointed to must not be declared const. Likewise, a function that calls a
non-const function usually must not be const. It does not make sense for
a const function to return void."
The following patch remove const from the function declaration.
Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Acked-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
IXP2000 (ARM-based) platforms use a separate 'struct resource' for PCI MEM
space. Resource allocation for PCI BARs always fails because the 'root'
resource (the IXP2000 PCI MEM resource) always has the entire address space
(00000000-ffffffff) free, and find_resource() calculates the size of that
range as ffffffff-00000000+1=0, so all allocations fail because it thinks
there is no space.
(akpm: pls. double-check)
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Add a current 'dontdiff' file for use with 'diff -X dontdiff'.
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ted has agreed to let me take over as maintainer of /dev/random and
friends. I've gone ahead and added a line to his entry in CREDITS.
Signed-off-by: Matt Mackall <mpm@selenic.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
opl3sa2: Fix "irq"-parameter name typo for parameter description.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In the new io infrastructure, all of our operators are expecting the
underlying device to be little endian (because the PCI bus, their main
consumer, is LE).
However, there are a fair few devices and busses in the world that are
actually Big Endian. There's even evidence that some of these BE bus and
chip types are attached to LE systems. Thus, there's a need for a BE
equivalent of our io{read,write}{16,32} operations.
The attached patch adds this as io{read,write}{16,32}be. When it's in,
I'll add the first consume (the 53c700 SCSI chip driver).
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Randy please double check especially this one.
there may be a better solution.
Fix efi section references:
remove __initdata for struct efi efi_phys
and struct efi_memory_map memmap
Error: ./arch/i386/kernel/efi.o .text refers to 000000d3 R_386_32
.init.data
Error: ./arch/i386/kernel/efi.o .text refers to 000000ff R_386_32
.init.data
efi_memmap_walk (which is not __init nor static)
accesses both efi_phys and memmap.
Signed-off-by: maximilian attems <janitor@sternwelten.at>
Acked-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
one of the last buildcheck errors on i386, thanks Randy again for double
checking.
Fix pnpbios section references:
make dmi_system_id pnpbios_dmi_table __initdata
Error: ./drivers/pnp/pnpbios/core.o .data refers to 00000100 R_386_32
.init.text
Error: ./drivers/pnp/pnpbios/core.o .data refers to 0000012c R_386_32
.init.text
Signed-off-by: maximilian attems <janitor@sternwelten.at>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The hlist_for_each_entry_rcu() comment block refers to a nonexistent
hlist_add_rcu() API, needs to change to hlist_add_head_rcu().
Signed-off-by: Paul E. McKenney <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The direct I/O code is mapping the read request to the file system block. If
the file size was not on a block boundary, the result would show the the read
reading past EOF. This was only happening for the AIO case. The non-AIO case
truncates the result to match file size (in direct_io_worker). This patch
does the same thing for the AIO case, it truncates the result to match the
file size if the read reads past EOF.
When I/O completes the result can be truncated to match the file size
without using i_size_read(), thus the aio result now matches the number of
bytes read to the end of file.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
These have been deprecated since ->compat_ioctl when in, thus only a short
deprecation period. There's four users left: i2o_config, s390/z90crypy,
s390/dasd and s390/zfcp and for the first two patches are about to be
submitted to get rid of it.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Now that no architectures defines HAVE_ARCH_GET_SIGNAL_TO_DELIVER anymore
this can go away. It was a transitional hack only.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Don't put root block of quota tree to the free list (when quota file is
completely empty). That should not actually happen anyway (somebody should
get accounted for the filesystem root and so quota file should never be
empty) but better prevent it here than solve magical quota file
corruption.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove dquot structures from quota file on quotaon - quota code does not
expect them to be there.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Whilst trying to stress test a Promise SX8 card, we stumbled across
some nasty filesystem corruption in ext2. Our tests involved
creating an ext2 partition, mounting, running several concurrent
fsx's over it, umounting, and fsck'ing, all scripted[1]. The fsck
would always return with errors.
This regression was traced back to a change between 2.6.9 and
2.6.10, which moves the functionality of ext2_put_inode into
ext2_clear_inode. The attached patch reverses this change, and
eliminated the source of corruption.
Mingming Cao <cmm@us.ibm.com> said:
I think his patch for ext2 is correct. The corruption on ext3 is not the same
issue he saw on ext2. I believe that's the race between discard reservation
and reservation in-use that we already fixed it in 2.6.12- rc1.
For the problem related to ext2, at the time when we design reservation for
ext3, we decide we only need to discard the reservation at the last file
close, so we have ext3_discard_reservation on iput_final- >ext3_clear_inode.
The ext2 handle discard preallocation differently at that time, it discard the
preallocation at each iput(), not in input_final(), so we think it's
unnecessary to thrash it so frequently, and the right thing to do, as we did
for ext3 reservation, discard preallocation on last iput(). So we moved the
ext2_discard_preallocation from ext2_put_inode(0 to ext2_clear_inode.
Since ext2 preallocation is doing pre-allocation on disk, so it is possible
that at the unmount time, someone is still hold the reference of the inode, so
the preallocation for a file is not discard yet, so we still mark those blocks
allocated on disk, while they are not actually in the inode's block map, so
fsck will catch/fix that error later.
This is not a issue for ext3, as ext3 reservation(pre-allocation) is done in
memory.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- plug various leaks and use after frees in the remove and
initialization failure path (some still left)
- remove useless global list of boards and use pci_set_drvdata instead
- unobsfucate init path by merging functions together
- kill various totally useless state variables
- .. probably more I forgot
Note that the tty part still generates lots of sparse warnings and there's
still a totally useless layer of function pointer indirections, but maybe
someone else will fix that bit up.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In function __generic_unplug_device(), kernel can use a cheaper function
elv_queue_empty() instead of more expensive elv_next_request to find
whether the queue is empty or not. blk_run_queue can also made conditional
on whether queue's emptiness before calling request_fn().
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fix 3 calls to module_param_string() in
driver/media/video/tuner-core.c and drivers/media/video/tda9887.c. In all
three places, the len and the perm parameter was switched.
Signed-off-by: Bert Wesarg <wesarg@informatik.uni-halle.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
there seems to be a bug, at least for me, in kernel/param.c for arrays with
.num == NULL. If .num == NULL, the function param_array_set() uses &.max
for the call to param_array(), wich alters the .max value to the number of
arguments. The result is, you can't set more array arguments as the last
time you set the parameter.
example:
# a module 'example' with
# static int array[10] = { 0, };
# module_param_array(array, int, NULL, 0644);
$ insmod example.ko array=1,2,3
$ cat /sys/module/example/parameters/array
1,2,3
$ echo "4,3,2,1" > /sys/module/example/parameters/array
$ dmesg | tail -n 1
kernel: array: can take only 3 arguments
Signed-off-by: Bert Wesarg <wesarg@informatik.uni-halle.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
A question on sigwaitinfo based IO mechanism in multithreaded applications.
I am trying to use RT signals to notify me of IO events using RT signals
instead of SIGIO in a multithreaded applications. I noticed that there was
some discussion on lkml during november 1999 with the subject of the
discussion as "Signal driven IO". In the thread I noticed that RT signals
were being delivered to the worker thread. I am running 2.6.10 kernel and
I am trying to use the very same mechanism and I find that only SIGIO being
propogated to the worker threads and RT signals only being propogated to
the main thread and not the worker threads where I actually want them to be
propogated too. On further inspection I found that the following patch
which I have attached solves the problem.
I am not sure if this is a bug or feature in the kernel.
Roland McGrath <roland@redhat.com> said:
This relates only to fcntl F_SETSIG, which is a Linux extension. So there is
no POSIX issue. When changing various things like the normal SIGIO signalling
to do group signals, I was concerned strictly with the POSIX semantics and
generally avoided touching things in the domain of Linux inventions. That's
why I didn't change this when I changed the call right next to it. There is
no reason I can see that F_SETSIG-requested signals shouldn't use a group
signal like normal SIGIO does. I'm happy to ACK this patch, there is nothing
wrong with its change to the semantics in my book. But neither POSIX nor I
care a whit what F_SETSIG does.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There is a possibility that a bio will be accessed after it has been freed
on SCSI. It happens if you submit a bio with BIO_SYNC marked and the
auto-unplugging kicks the request_fn, SCSI re-enables interrupts in-between
so if the request completes between the add_request() in __make_request()
and the bio_sync() call, we could be looking at a dead bio. It's a slim
race, but it has been triggered in the Real World.
So assign bio_sync() to a local variable instead.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I had added the __CHOOSE_MODE syntax to fix some warnings with newer GCC's
in the uml-fix-cond-expr-as-lvalues-warning patch.
Here is the update from the version I sent to make it work also when only
one mode (TT or SKAS) is enabled.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes remaining u32 vs. pm_message_t confusions in -rc2-mm3. [There
are usb changes, too; they went to Greg on his request.]
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes u32 vs. pm_message_t confusion in remaining places. Fortunately
there's few of them.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes u32 vs. pm_message_t confusion in drivers/video. Should change no
code.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rc2-mm1 still contains few places where u32 and pm_message_t. This fixes
drivers/serial [should change no code].
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This updates video.txt documentation with information about few more
systems.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes pm_message_t vs. u32 confusion in ppc and aty (I *hope* that's
basically radeon code...). I was not able to test most of these, but I'm
not really changing anything, so it should be okay.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately that
turned out not to be the case as Russel King pointed out. Here are fixes for
drivers/macintosh.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately that
turned out not to be the case... Here are fixes x86-64.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately that
turned out not to be the case as Russel King pointed out. This fixes last few
bits in alsa.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes u32 vs. pm_message_t in drivers/mmc, drivers/mtd and
drivers/scsi.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes u32 vs. pm_message_t in drivers/message.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Here are fixes for drivers/media.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes u32 vs. pm_message_t in pcmcia.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes remaining u32s in drivers/ net.
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I thought I'm done with fixing u32 vs. pm_message_t ... unfortunately
that turned out not to be the case as Russel King pointed out. Here are
fixes for Documentation and common code (mainly system devices).
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- broken sibling_map setup in x86_64
- grouping all the core and HT related cpuinfo fields.
We are reasonably sure that adding new cpuinfo fields after "siblings" field,
will not cause any app failure. Thats because today's /proc/cpuinfo
format is completely different on x86, x86_64 and we haven't heard of any
x86 app breakage because of this issue. Grouping these fields will
result in more or less common format on all architectures (ia64, x86 and
x86_64) and will cause less confusion.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This will allow hotplug CPU in the future and in general cleans up a lot of
crufty code. It also should plug some races that the old hackish way
introduces. Remove one old race workaround in NMI watchdog setup that is not
needed anymore.
I removed the old total sum of bogomips reporting code. The brag value of
BogoMips has been greatly devalued in the last years on the open market.
Real CPU hotplug will need some more work, but the infrastructure for it is
there now.
One drawback: the new TSC sync algorithm is less accurate than before. The
old way of zeroing TSCs is too intrusive to do later. Instead the TSC of the
BP is duplicated now, which is less accurate.
akpm:
- sync_tsc_bp_init seems to have the sense of `init' inverted.
- SPIN_LOCK_UNLOCKED is deprecated - use DEFINE_SPINLOCK.
Cc: <rusty@rustcorp.com.au>
Cc: <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It was confusingly named.
Signed-off-by: Andi Kleen <ak@suse.de>
DESC
x86_64: Switch SMP bootup over to new CPU hotplug state machine
EDESC
From: "Andi Kleen" <ak@suse.de>
This will allow hotplug CPU in the future and in general cleans up a lot of
crufty code. It also should plug some races that the old hackish way
introduces. Remove one old race workaround in NMI watchdog setup that is not
needed anymore.
I removed the old total sum of bogomips reporting code. The brag value of
BogoMips has been greatly devalued in the last years on the open market.
Real CPU hotplug will need some more work, but the infrastructure for it is
there now.
One drawback: the new TSC sync algorithm is less accurate than before. The
old way of zeroing TSCs is too intrusive to do later. Instead the TSC of the
BP is duplicated now, which is less accurate.
Cc: <rusty@rustcorp.com.au>
Cc: <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Exceptions and hardware interrupts can, to a certain degree, nest, so when
attempting to follow the sequence of stacks used in order to dump their
contents this has to be accounted for. Also, IST stacks have their tops
stored in the TSS, so there's no need to add the stack size to get to their
ends.
Minor changes from AK.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Clean up the code greatly. Now uses the infrastructure from the Intel dual
core patch Should fix a final bug noticed by Tyan of not detecting the nodes
correctly in some corner cases.
Patch for x86-64 and i386
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Appended patch adds the support for Intel dual-core detection and displaying
the core related information in /proc/cpuinfo.
It adds two new fields "core id" and "cpu cores" to x86 /proc/cpuinfo and the
"core id" field for x86_64("cpu cores" field is already present in x86_64).
Number of processor cores in a die is detected using cpuid(4) and this is
documented in IA-32 Intel Architecture Software Developer's Manual (vol 2a)
(http://developer.intel.com/design/pentium4/manuals/index_new.htm#sdm_vol2a)
This patch also adds cpu_core_map similar to cpu_sibling_map.
Slightly hacked by AK.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Calling a notifier three times in the debug handler does not make much sense,
because a debugger can figure out the various conditions by itself. Remove
the additional calls to DIE_DEBUG and DIE_DEBUGSTEP completely.
This matches what i386 does now.
This also makes sure interrupts are always still disabled when calling a
debugger, which prevents:
BUG: using smp_processor_id() in preemptible [00000001] code: tpopf/1470
caller is post_kprobe_handler+0x9/0x70
Call Trace:<ffffffff8024f10f>{smp_processor_id+191} <ffffffff80120e69>{post_kpro
be_handler+9}
<ffffffff80120f7a>{kprobe_exceptions_notify+58}
<ffffffff80144fc0>{notifier_call_chain+32} <ffffffff80110daf>{do_debug+335}
<ffffffff8010f513>{debug+127} <EOE>
on preemptible debug kernels with kprobes when single stepping in user space.
This was probably a bug even on non preempt kernels, this function was
supposed to be running with interrupts off according to a comment there.
Note to third part debugger maintainers: please double check your debugger can
still single step.
Cc: <prasanna@in.ibm.com>
Cc: <jbeulich@novell.com>
Cc: <kaos@sgi.com>
Cc: <jim.houston@ccur.com>
Cc: <jfv@bluesong.net>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This might save memory on some Opteron systems without AGP bridge.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Look for gaps in the e820 memory map to put PCI resources in.
This hopefully fixes problems with the PCI code assigning 32bit BARs MMIO
resources which are >32bit.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We need to use the size_and_mask in set_mtrr_var_ranges(which is called
while programming MTRR's for AP's
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
It doesn't make sense to only do this only for AMD K8.
This would support future CPUs with extended address spaces properly.
For i386 and x86-64
Cc: <davej@redhat.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
They are rumoured to be much more reliable than the RIP in the stack frame on
P4s.
This is a borderline case because the code is very simple. Please note there
are no plans to add support for all the MCE register MSRs.
Cc: <venkatesh.pallipadi@intel.com>
Cc: <racing.guo@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
local_t is actually a win over atomic_t because it does not need lock
prefixes.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The NMI watchdog code did this incorrectly
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
There were no reports about the previous warning for FPU exceptions in the
kernel, so make it a die() now.
Also improve the error messages slightly.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On Intel Noconas the TSC ticks with a constant frequency. Don't scale the
factor used by udelay when cpufreq changes the frequency.
This generalizes an earlier patch by Intel for this.
Cc: <venkatesh.pallipadi@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Could lead to a lost reschedule event when the process already rescheduled on
exception exit, and needs it again while still being in the kernel. Unlikely
case though.
Also remove one redundant cli in another entry.S path.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This fixes various issues in the return path for "paranoid"
handlers (= running on a private exception stack that act like NMIs).
Generalize previous hack to switch back to process stack for
scheduling/signal handling purposes.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This removes some unnecessary code in the assembly files.
Matches i386 behaviour.
In addition don't clear the work check mask after work has been done.
This fixes some theoretical signal/other event losses.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ported from i386/Linus
Fix another TF corner case. Need to do the special TF handling for all
signals to make debuggers happy
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ported from i386/Linus
Still won't handle other TF changing instructions like IRET or LAHF.
Prefix handling must be double checked...
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ported from i386/Linus
Be more careful with TF handling to fix some copy protection codes in Wine
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ported from i386 (originally from Linus)
clean up ptrace single-stepping, make PT_DTRACE exact.
(This makes the naming of "DTRACE" purely historical, since
on x86 it now means "single step in progress").
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This allows to use them on x86-64
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use a real VMA to map the 32bit vsyscall page
This interacts better with Hugh's upcomming VMA walk optimization
Also removes some ugly special cases.
Code roughly modelled after the ppc64 vdso version from Ben Herrenschmidt.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I had strange NMI watchdog timeouts running sysrq-T across 9600-baud serial.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
x86_64 genapic mechanism should be aware of machines that use physical APIC
mode regardless of how many clusters/processors are detected.
ACPI 3.0 FADT makes this determination very simple by providing a feature
flag "force_apic_physical_destination_mode" to state whether the machine
unconditionally uses physical APIC mode.
Unisys' next generation x86_64 ES7000 will need to utilize this FADT
feature flag in order to boot the x86_64 kernel in the correct APIC mode.
This patch has been tested on both x86_64 commodity and ES7000 boxes.
Signed-off-by: Jason Davis <jason.davis@unisys.com>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Port over a i386 kludge from rusty to x86-64
I don't think it is a full solution, but the upcomming smp bootup rewrite
will solve it.
This fixes BUGs at bootup on bigger x86-64 systems.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use the correct file name in BUG()
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Only display physical id/siblings when there are siblings or dual core.
In 2.6.11 I accidentially broke it and it was always displaying these
fields But for compatibility to all these /proc parsers around it is better
to do it in the old way again.
Noticed by Suresh Siddha
Cc: <Suresh.b.siddha@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use the i386 PT_NOTE segment in x86_64 as well.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds an ELF note to the vDSO giving the LINUX_VERSION_CODE
value. Having this in the vDSO lets the dynamic linker avoid the `uname'
syscall it now always does at startup to ascertain the kernel ABI
available.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This moves the macro loaddebug from asm-i386/suspend.h to
asm-i386/processor.h, which is the place that makes sense for it to be
defined, removes the extra copy of the same macro in
arch/i386/kernel/process.c, and makes arch/i386/kernel/signal.c use the
macro in place of its expansion.
This is a purely cosmetic cleanup for the normal i386 kernel. However, it
is handy for Xen to be able to just redefine the loaddebug macro once
instead of also changing the signal.c code.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds the Intel ESB2 DID's to the ata_piix.c and quirks.c file for
IDE mode SATA support.
Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds the Intel ESB2 DID's to the intel8x0.c file for AC'97 audio
support.
Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds the Intel ESB2 DID's to the piix.c file for IDE PATA support.
Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds the Intel ESB2 DID's to the irq.c and pci_ids.h files.
Signed-off-by: Jason Gaston <Jason.d.gaston@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch had removed obsolete VR41xx RTC function from vr41xx.h . I
forgot to put this change in "update VR41xx RTC support".
Signed-off-by: Yoichi Yuasa <yuasa@hh.iij4u.or.jp>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
For prefetches of NULL (as when walking a short linked list), PPC64 will in
some cases take a performance hit. The hardware needs to do the TLB walk,
and said walk will always miss, which means (up to) two L2 misses as
penalty. This seems to hurt overall performance, so for NULL pointers skip
the prefetch alltogether.
Signed-off-by: Olof Johansson <olof@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
During some code inspection using gcc 4.0 I noticed a stack frame was being
created for a number of functions that didnt require it. For example:
c0000000000df944 <._spin_unlock>:
c0000000000df944: fb e1 ff f0 std r31,-16(r1)
c0000000000df948: f8 21 ff c1 stdu r1,-64(r1)
c0000000000df94c: 7c 3f 0b 78 mr r31,r1
c0000000000df950: 7c 20 04 ac lwsync
c0000000000df954: e8 21 00 00 ld r1,0(r1)
c0000000000df958: 38 00 00 00 li r0,0
c0000000000df95c: 90 03 00 00 stw r0,0(r3)
c0000000000df960: eb e1 ff f0 ld r31,-16(r1)
c0000000000df964: 4e 80 00 20 blr
It turns out we are adding -fno-omit-frame-pointer to ppc64 which is
causing the above behaviour. Removing that flag results in much better
code:
c0000000000d5b30 <._spin_unlock>:
c0000000000d5b30: 7c 20 04 ac lwsync
c0000000000d5b34: 38 00 00 00 li r0,0
c0000000000d5b38: 90 03 00 00 stw r0,0(r3)
c0000000000d5b3c: 4e 80 00 20 blr
We dont require a frame pointer to debug on ppc64, so remove it.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The code that parses the OF device tree contains an old bogus hack which
was killed a long time ago on ppc32, but survived in ppc64. It was
supposed to help with a problem on the f50 which is ... a 32 bits machine
:) Additionally, that hack is causing problems, so let's just get rid of
it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds detection of the Altivec capability of the CPU via the
firmware in addition to the cpu table. This allows newer CPUs that aren't
in the table to still have working altivec support in the kernel.
It also fixes a problem where if a CPU isn't recognized as having altivec
features, and takes an altivec unavailable exception due to userland
issuing altivec instructions, the kernel would happily enable it and
context switch the registers ... but not all of them (it would basically
forget vrsave). With this patch, the kernel will refuse to enable altivec
when the feature isn't detected for the CPU (SIGILL).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch reworks the way the ppc64 is mapped in user memory by the kernel
to make it more robust against possible collisions with executable
segments. Instead of just whacking a VMA at 1Mb, I now use
get_unmapped_area() with a hint, and I moved the mapping of the vDSO to
after the mapping of the various ELF segments and of the interpreter, so
that conflicts get caught properly (it still has to be before
create_elf_tables since the later will fill the AT_SYSINFO_EHDR with the
proper address).
While I was at it, I also changed the 32 and 64 bits vDSO's to link at
their "natural" address of 1Mb instead of 0. This is the address where
they are normally mapped in absence of conflict. By doing so, it should be
possible to properly prelink one it's been verified to work on glibc.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In arch/ppc64/kernel/ppc_ksyms.c, we are still exporting
flush_icache_range, but that has been changed to be an inline in
include/asm-ppc64/cacheflush.h which calls __flush_icache_range (defined in
arch/ppc64/kernel/misc.S).
This patch changes the export to __flush_icache_range, thus allowing
modules to use the inline flush_icache_range.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes ppc64 __ioremap() so that it stops adding implicitely
_PAGE_GUARDED when the cache is not writeback, and instead, let the callers
provide the flag they want here. This allows things like framebuffers to
explicitely request a non-cacheable and non-guarded mapping which is more
efficient for that type of memory without side effects. The patch also
fixes all current callers to add _PAGE_GUARDED except btext, which is fine
without it.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch hacks the current PowerMac Alsa driver to add some basic support
of analog sound output to some desktop G5s. It has severe limitations
though:
- Only 44100Khz 16 bits
- Only work on G5 models using a TAS3004 analog code, that is early
single CPU desktops and all dual CPU desktops at this date, but none
of the more recent ones like iMac G5.
- It does analog only, no digital/SPDIF support at all, no native
AC3 support
Better support would require a complete rewrite of the driver (which I am
working on, but don't hold your breath), to properly support the diversity
of apple sound HW setup, including dual codecs, several i2s busses, all the
new codecs used in the new machines, proper clock switching with digital,
etc etc etc...
This patch applies on top of the other PowerMac sound patches I posted in
the past couple of days (new powerbook support and sleep fixes).
Note: This is a FAQ entry for PowerMac sound support with TI codecs: They
have a feature called "DRC" which is automatically enabled for the internal
speaker (at least when auto mute control is enabled) which will cause your
sound to fade out to nothing after half a second of playback if you don't
set a proper "DRC Range" in the mixer. So if you have a problem like that,
check alsamixer and raise your DRC Range to something reasonable.
Note2: This patch will also add auto-mute of the speaker when line-out jack
is used on some earlier desktop G4s (and on the G5) in addition to the
headphone jack. If that behaviour isn't what you want, just disable
auto-muting and use the manual mute controls in alsamixer.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch improves the behaviour of the "tumbler/snapper" driver used on
newer PowerMacs during sleep. It properly set the HW mutes to shut down
amplifiers and does an analog shutdown of the codec. That might improve
power consumption during sleep on a number of machines.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch hacks the current Alsa snd-powermac driver to add support for
recent machine models with the tas3004 chip, that is basically new laptop
models. The Mac Mini is _NOT_ yet supported by this patch (soon soon ...).
The G5s (iMac or Desktop) will need the rewritten sound driver on which
I'm working on (I _might_ get a hack for analog only on some G5s on the
current driver, but no promise).
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch allows Kconfig to build the MV643xx ethernet driver on Pegasos
(CONFIG_PPC_MULTIPLATFORM) and adds what I think is a missing fix from
Dale's batch, that is remove SA_INTERRUPT and add SA_SHIRQ in there as the
interrupt is shared if I understand things correctly.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Fabio Massimo Di Nitto <fabbione@ubuntu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
make defconfig give the following error on ppc (gcc-4):
arch/ppc/syslib/open_pic.c:36: error: static declaration of ‘OpenPIC’ follows non-static declaration
arch/ppc/syslib/open_pic_defs.h:175: error: previous declaration of ‘OpenPIC’ was here
Signed-Off-By: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
make defconfig give the following error on ppc (gcc-4):
arch/ppc/syslib/prom_init.c:120: error: static declaration of ‘prom_display_paths’ follows non-static declaration
include/asm/prom.h:17: error: previous declaration of ‘prom_display_paths’ was here
arch/ppc/syslib/prom_init.c:122: error: static declaration of ‘prom_num_displays’ follows non-static declaration
include/asm/prom.h:18: error: previous declaration of ‘prom_num_displays’ was here
Signed-Off-By: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
make defconfig give the following error on ppc (gcc-4):
arch/ppc/kernel/time.c:92: error: static declaration of ‘time_offset’
follows non-static declaration
include/linux/timex.h:236: error: previous declaration of ‘time_offset’
was here
The following patch solves it (time_offset is declared in timer.c).
Signed-Off-By: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
make defconfig give the following error on ppc (gcc-4):
include/asm-m68k/setup.h:365: error: array type has incomplete element
type
Signed-Off-By: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch restores the original behaviour of prep_pcibios_fixup() to only
call prep_pib_init() on machines with an openpic. This allows the
Powerstack II Pro4000 to boot again.
Signed-off-by: Leigh Brown <leigh@solinno.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When building a ppc32 MULTIPLATFORM kernel for a 64bit pmac, we try and
build certain files or use certain functions that make no sense in that
context. This catches the last of these.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The following problem was found by Giovambattista Pulcini
<gpulcini@swintel.it>, who also provided a partial patch, and this has been
verified by our time guru Gabriel Paubert <paubert@iram.es>.
The problem is that in do_settimeofday() we always set time_state to
TIME_ERROR and except on two platforms, never re-set it. This meant that
ntp_gettime() and ntp_adjtime() always returned TIME_ERROR, incorrectly.
Based on Gabriel's analysis, time_state is used for leap-second processing,
and ppc shouldn't be mucking with it.
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The CONFIG_8xx_WDT option got broken in the generic hardirq update as ppc32
had its own different request_irq that worked when other arches used
setup_irq. This is the trivial fix for the problem.
From: Carsten Juttner <carjay@gmx.net>
Signed-off-by: Tom Rini <trini@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
To add support for 36-bit physical addressing on e500 the following changes
have been made. The changes are generalized to support any physical address
size larger than 32-bits:
* Allow FSL Book-E parts to use a 64-bit PTE, it is 44-bits of pfn, 20-bits
of flags.
* Introduced new CPU feature (CPU_FTR_BIG_PHYS) to allow runtime handling of
updating hardware register (SPRN_MAS7) which holds the upper 32-bits of
physical address that will be written into the TLB. This is useful since
not all e500 cores support 36-bit physical addressing.
* Currently have a pass through implementation of fixup_bigphys_addr
* Moved _PAGE_DIRTY in the 64-bit PTE case to free room for three additional
storage attributes that may exist in future FSL Book-E cores and updated
fault handler to copy these bits into the hardware TLBs.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Allow the pfn to be offset by more than just PAGE_SHIFT in the pte. Today,
PAGE_SHIFT tends to allow us to have 12-bits of flags in the pte. In the
future if we have a larger pte we can allocate more bits for flags by
offsetting the pfn even further.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
CONFIG_PTE_64BIT & CONFIG_PHYS_64BIT are not currently consistently used in
the code base. Fixed up the usage such that CONFIG_PTE_64BIT is used when we
have a 64-bit PTE regardless of physical address width. CONFIG_PHYS_64BIT is
used if the physical address width is larger than 32-bits, regardless of PTE
size.
These changes required a few sub-arch specific ifdef's to be fixed and the
introduction of a physical address format string.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
While the existing pte_update code handled atomically modifying a 64-bit PTE,
it did not return all 64-bits of the PTE before it was modified. This causes
problems in some places that expect the full PTE to be returned, like
ptep_get_and_clear().
Created a new pte_update function that is conditional on CONFIG_PTE_64BIT. It
atomically reads the low PTE word which all PTE flags are required to be in
and returns a premodified full 64-bit PTE.
Since we now have an explicit 64-bit PTE version of pte_update we can also
remove the hack that existed to get the low PTE word regardless of size.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
My previous patch that added sleep support for uninorth-agp and some AGP
"off" stuff in radeonfb and aty128fb is breaking some configs. More
specifically, it has problems with rage128 setups since the DRI code for
these in X doesn't properly re-enable AGP on wakeup or console switch
(unlike the radeon DRM).
This patch fixes the problem for pmac once for all by using a different
approach. The AGP driver "registers" special suspend/resume callbacks with
some arch code that the fbdev's can later on call to suspend and resume
AGP, making sure it's resumed back in the same state it was when suspended.
This is platform specific for now. It would be too complicated to try to
do a generic implementation of this at this point due to all sort of weird
things going on with AGP on other architectures. We'll re-work that whole
problem cleanly once we finally merge fbdev's and DRI.
In the meantime, please apply this patch which brings back some r128 based
laptops into working condition as far as system sleep is concerned.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch updates the PowerMac cpufreq driver. It depends on the addition
of the suspend() method (my previous patch) and on the new flag I defined
to silence some warnings that are normal for us.
It fixes various issues related to cpufreq on pmac, including some crashes
on some models when sleeping the machine while in low speed, proper voltage
control on some newer machines, and adds voltage control on 750FX based G3
laptops.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
On ppc, we emulate instructions that cause alignment exceptions. If we are
single-stepping an instruction and it causes an alignment exception, we
will currently do the next instruction as well before taking the
single-step exception. This patch fixes that, so we take the single-step
exception after emulating the instruction.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
If we should happen to get an altivec assist exception while executing in
the kernel, we will currently try to handle it and fail, and end up oopsing
with (apparently) a segfault. (An altivec assist exception occurs for
floating-point altivec instructions with denormalized inputs or outputs if
the altivec unit is in java mode.)
This patch checks explicitly if we are in user mode and prints a useful
message if not.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Currently the procedure in the ppc32 kernel that synchronizes the timebase
registers across an SMP powermac system does so by setting both timebases
to zero. That is OK at boot but causes problems if done later. So that we
can do hotplug CPU on these machines, this patch changes the code so it
reads the timebase from one CPU and transfers the value to the other CPU.
(Hotplug CPU is needed for sleep (aka suspend to RAM) to work.)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds interrupt acknowledge to the PPC4xx PIC enable_irq
implementation for level-sensitive IRQ sources. This helps in cases when
enable/disable_irq is used in interrupt handlers for hardware, which
requires IRQ acknowledge to be issued from non-interrupt context (e.g.
when actual ACK in device needs an I2C transaction). For such strange
hardware, interrupt handler disables IRQ and defers actual ACK to some
other context. When this happens, IRQ is enabled again. For
level-sensitive sources we get spurious triggering right after IRQ is
enabled. This patch fixes this.
Suggested by Tolunay Orkun <listmember@orkun.us>.
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
The code that went into arch/ppc/kernel/signal.c recently to handle process
freezing seems to contain a dubious assumption: that a process that calls
do_signal when PF_FREEZE is set will have entered the kernel because of a
system call. This patch removes that assumption.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds SELinux support for the KOBJECT_UEVENT Netlink family, so
that SELinux can apply finer grained controls to it. For example, security
policy for hald can be locked down to the KOBJECT_UEVENT Netlink family
only. Currently, this family simply defaults to the default Netlink socket
class.
Note that some new permission definitions are added to sync with changes in
the core userspace policy package, which auto-generates header files.
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
When we are not the real parent of the dst (e.g., when we're xfrm_dst and
the child is an rtentry), it may already be on the GC list.
In fact the current code is buggy to, we need to check dst->flags before
the dec as dst may no longer be valid afterwards.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This recently got changed to include a lot of kernel internal stuff in the
non-__KERNEL__ area of the header, which isn't so kosher and breaks libc
builds.
The fix is pretty simple.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Working on some code lately I've been getting huge values for "Cached".
The cause is that get_page_cache_size() is an approximate value, and for a
sufficiently small returned value of get_page_cache_size() the value
underflows.
Signed-off-by: Martin Hicks <mort@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
We only call pageout() for dirty pages, so this test is redundant.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
iscsi/lvm2/multipath needs guaranteed protection from the oom-killer, so
make the magical value of -17 in /proc/<pid>/oom_adj defeat the oom-killer
altogether.
(akpm: we still need to document oom_adj and friends in
Documentation/filesystems/proc.txt!)
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
We will return NULL from filemap_getpage when a page does not exist in the
page cache and MAP_NONBLOCK is specified, here:
page = find_get_page(mapping, pgoff);
if (!page) {
if (nonblock)
return NULL;
goto no_cached_page;
}
But we forget to do so when the page in the cache is not uptodate. The
following could result in a blocking call:
/*
* Ok, found a page in the page cache, now we need to check
* that it's up-to-date.
*/
if (!PageUptodate(page))
goto page_not_uptodate;
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drm: fix r128_state.c switch statements.. in drivers/char/drm/r128_state.c
(linux-2.6.12-rc2), some breaks are missing in the switch statement. See
trivial fix below.
Signed-off-by: Hansjoerg Lipp <hjlipp@web.de>
Signed-off-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch fixes a bug in the SELinux Netlink message type detection code,
where the wrong constant was being used in a case statement. The incorrect
value is not valid for this class of object so it would not have been
reached, and fallen through to a default handler for all Netlink messages.
Signed-off-by: James Morris <jmorris@redhat.com>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
From: Johannes Stezenbach <js@linuxtv.org>
Fix http://bugme.osdl.org/show_bug.cgi?id=4395.
Patch by Manu Abraham and Gerd Knorr:
Remove redundant bttv_reset_audio() which caused the computer to freeze
with some bt8xx based DVB cards when loading the bttv driver.
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
I have no idea how a bug like this lasted so long. Anyways, obvious
memset()'ing of incorrect pointer.
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix the access-above-bottom-of-stack crash.
1. Allows to preserve the valueable optimization
2. Works for NMIs
3. Doesn't care whether or not there are more of the like instances
where the stack is left empty.
4. Seems to work for me without the crashes:)
(akpm: this is still under discussion, although I _think_ it's OK. You might
want to hold off)
Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
From: Andreas Gruenbacher <agruen@suse.de>
ext[23]_get_acl will return an error when reading the attribute fails or
out-of-memory occurs. Catch this case.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This was unexported by Arjan because we have no current users.
However, during a conversion from tasklets to workqueues of the parisc led
functions, we ran across a case where this was needed. In particular, the
open coded equivalent of cancel_rearming_delayed_workqueue was implemented
incorrectly, which is, I think, all the evidence necessary that this is a
useful API.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In the deflate_[compress|uncompress|pcompress] functions we call the
zlib_[in|de]flateReset function at the beginning. This is OK. But when we
unload the deflate module we don't call zlib_[in|de]flateEnd to free all
the zlib internal data. It looks like a bug for me. Please, consider the
attached patch.
Signed-off-by: Artem B. Bityuckiy <dedekind@infradead.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
From: Russell King <rmk+lkml@arm.linux.org.uk>
Oddly, max_low_pfn/max_pfn end up being the number of pages in the system,
rather than the maximum PFN on ARM. This doesn't seem to cause any problems,
so just add a note about it.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
From: Russell King <rmk+lkml@arm.linux.org.uk>
The ARM dma_supported() is rather basic, and I don't think it takes into
account everything that it should do (eg, whether the mask agrees with what
we'd return for GFP_DMA allocations). Note this.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
From: Russell King <rmk+lkml@arm.linux.org.uk>
For some reason, this help text was missed when the file was last audited
by the documentation referencing folk. Fix this incorrect documentation
reference.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
)
From: Russell King <rmk+lkml@arm.linux.org.uk>
ARM wasn't raising a SIGBUS with a siginfo structure. Fix
__do_user_fault() to allow us to use it for SIGBUS conditions, and arrange
for the sigbus path to use this.
We need to prevent the siginfo code being called if we do not have a user
space context to call it, so consolidate the "user_mode()" tests.
Thanks to Ian Campbell who spotted this oversight.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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