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[media] uvcvideo: Fix alternate setting selection

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The alternate setting number is not equal to the alternate setting index
in the interface alternate settings table. Use the alternate setting
number from the interface descriptor when calling usb_set_interface().

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Laurent Pinchart 2012-06-21 06:35:04 -03:00 committed by Mauro Carvalho Chehab
parent c854a48a97
commit 4807063faa
1 changed files with 1 additions and 1 deletions
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2
drivers/media/video/uvc/uvc_video.c
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@ -1598,7 +1598,7 @@ static int uvc_init_video(struct uvc_streaming *stream, gfp_t gfp_flags)
psize = le16_to_cpu(ep->desc.wMaxPacketSize);
psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
if (psize >= bandwidth && psize <= best_psize) {
altsetting = i;
altsetting = alts->desc.bAlternateSetting;
best_psize = psize;
best_ep = ep;
}