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Commit 4807063f authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Mauro Carvalho Chehab
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[media] uvcvideo: Fix alternate setting selection 



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: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMing Lei <ming.lei@canonical.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent c854a48a

drivers/media/video/uvc/uvc_video.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

			}