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Petr Machata says: ==================== mlxsw: Add support for new reset flow Ido Schimmel writes: This patchset changes mlxsw to issue a PCI reset during probe and devlink reload so that the PCI firmware could be upgraded without a reboot. Unlike the old version of this patchset [1], in this version the driver no longer tries to issue a PCI reset by triggering a PCI link toggle on its own, but instead calls the PCI core to issue the reset. The PCI APIs require the device lock to be held which is why patches Patches #7 adds reset method quirk for NVIDIA Spectrum devices. Patch #8 adds a debug level print in PCI core so that device ready delay will be printed even if it is shorter than one second. Patches #9-#11 are straightforward preparations in mlxsw. Patch #12 finally implements the new reset flow in mlxsw. Patch #13 adds PCI reset handlers in mlxsw to avoid user space from resetting the device from underneath an unaware driver. Instead, the driver is gracefully de-initialized before the PCI reset and then initialized again after it. Patch #14 adds a PCI reset selftest to make sure this code path does not regress. [1] https://lore.kernel.org/netdev/cover.1679502371.git.petrm@nvidia.com/ ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.