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8b52ec2d18
The ISP supports multiple source subdevs, but can only capture from a single one at a time. The source is selected through link setup. The driver finds the active source in its .s_stream() handler using the media_entity_remote_pad() function. This fails to reject invalid configurations with multiple active sources. Fix it by using the media_pad_remote_pad_unique() helper instead, and inline rkisp1_isp_get_source() in rkisp1_isp_s_stream() as the function is small and has a single caller. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Dafna Hirschfeld <dafna@fastmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@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.