[media] uvcvideo: uvc_scan_fallback() for webcams with broken chain

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Some devices have invalid baSourceID references, causing uvc_scan_chain()
to fail, but if we just take the entities we can find and put them
together in the most sensible chain we can think of, turns out they do
work anyway. Note: This heuristic assumes there is a single chain.

At the time of writing, devices known to have such a broken chain are
  - Acer Integrated Camera (5986:055a)
  - Realtek rtl157a7 (0bda:57a7)

Signed-off-by: Henrik Ingo <henrik.ingo@avoinelama.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

...

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Henrik Ingo 2016-05-29 17:58:00 -03:00 • committed by Mauro Carvalho Chehab

parent 3907fae86e

commit e950267ab8

1 changed files with 112 additions and 6 deletions

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118

drivers/media/usb/uvc/uvc_driver.c

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