[media] uvcvideo: Fix incorrect bandwidth with Chicony device 04f2:b50b

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The "TOSHIBA Web Camera - 5M" Chicony device (04f2:b50b) seems to
compute the bandwidth on 16 bits and erroneously sign-extend it to
32 bits, resulting in a huge bandwidth value. Detect and fix that
condition by setting the 16 MSBs to 0 when they're all equal to 1.

Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

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Laurent Pinchart 2015-05-12 18:57:53 -03:00 • committed by Mauro Carvalho Chehab

parent 7195f61b80

commit 37f85b276a

1 changed files with 8 additions and 0 deletions

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drivers/media/usb/uvc/uvc_video.c

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