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15cd442e79
If requests are not supported by the driver, then return EACCES, not EPERM. If you attempt to mix queueing buffers directly and using requests, then EBUSY is returned instead of EPERM: once a specific queueing mode has been chosen the queue is 'busy' if you attempt the other mode (i.e. direct queueing vs via a request). Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.