8148665cb7
commit 4ca052b4ea621d0002a5e5feace51f60ad5e6b23 upstream. Some devices reference an output terminal as the source of extension units. This is incorrect, as output terminals only have an input pin, and thus can't be connected to any entity in the forward direction. The resulting topology would cause issues when registering the media controller graph. To avoid this problem, connect the extension unit to the source of the output terminal instead. While at it, and while no device has been reported to be affected by this issue, also handle forward scans where two output terminals would be connected together, and skip the terminals found through such an invalid connection. Reported-and-tested-by: John Nealy <jnealy3@yahoo.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 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.