2948c1e5d5
commit 42d62b7e47d58273c64fc1540e5d81ccfdb60f77 upstream.
The VSP1 driver uses the subdev .s_stream() operation to stop WPF
instances, without a corresponding call to start them. The V4L2 subdev
core started warning about unbalanced .s_stream() calls in commit
009905ec5043 ("media: v4l2-subdev: Document and enforce .s_stream()
requirements"), causing a regression with this driver.
Fix the problem by replacing the .s_stream() operation with an explicit
function call for WPF instances. This allows sharing an additional data
structure between RPF and WPF instances.
Fixes: 009905ec5043 ("media: v4l2-subdev: Document and enforce .s_stream() requirements")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/linux-media/2221395-6a9b-9527-d697-e76aebc6af@linux-m68k.org/
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.
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.