a1f51d3732
Not all devices use the CSIS device, some may use the FIMC directly in which case the CSIS device isn't registered. This leads to a nullptr exception when starting the stream as the CSIS device is always referenced. Instead, if getting the CSIS device fails, try getting the FIMC directly to check if we are using the subdev API Signed-off-by: Jonathan Bakker <xc-racer2@live.ca> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@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.