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Niklas Söderlund 6742cc8d71 media: adv7180: Use v4l2-ctrls core to handle s_ctrl locking
Instead of handling the state lock ourself in .s_ctrl use the v4l2-ctrls
core to handle it for us. This will allow us later to use the unlocked
__v4l2_ctrl_handler_setup() in initialization code where the state lock
is already held.

Add a lockdep assert to demonstrate the mutex must be held when setting
controls.

There is no functional change.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
History 2025-09-04 10:06:13 +02:00
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README

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 reStructuredText 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.