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12f6153d45
Since commit3d6a8fe256("media: ov7670: hook s_power onto v4l2 core"), the device is actually powered off while the video stream is stopped. So now set_format and s_frame_interval could be called while the device is powered off, but these callbacks try to change the register settings at this time. The frame format and framerate will be restored right after power-up, so we can just postpone applying these changes at these callbacks if the device is not powered up. Fixes:3d6a8fe256("media: ov7670: hook s_power onto v4l2 core") Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Reviewed-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-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.
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.