Arnd Bergmann 8162f78d27 media: v4l2-core: return -ENODEV from ioctl when not registered
I spotted a minor difference is handling of unregistered devices
between native and compat ioctls: the native handler never tries
to call into the driver if a device is not marked as registered.

I did not check whether this can cause issues in the kernel, or
just a different between return codes, but it clearly makes
sense that both should behave the same way.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-06-17 10:17:01 +02:00
2021-05-30 11:58:25 -10:00

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.
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