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Commit 480992b3 authored by Jean-François Moine's avatar Jean-François Moine Committed by Mauro Carvalho Chehab
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[media] gspca - main: Fix the isochronous transfer interval 



For USB speeds different of 'low', the bInterval value is logarithmic.

Signed-off-by: default avatarJean-François Moine <moinejf@free.fr>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 8d64d4f6

drivers/media/video/gspca/gspca.c

+4 −1
Original line number Original line Diff line number Diff line
@@ -754,7 +754,10 @@ static int create_urbs(struct gspca_dev *gspca_dev, 
						    ep->desc.bEndpointAddress);

						    ep->desc.bEndpointAddress);

			urb->transfer_flags = URB_ISO_ASAP

			urb->transfer_flags = URB_ISO_ASAP

					| URB_NO_TRANSFER_DMA_MAP;

					| URB_NO_TRANSFER_DMA_MAP;

			if (gspca_dev->dev->speed == USB_SPEED_LOW)

				urb->interval = ep->desc.bInterval;

				urb->interval = ep->desc.bInterval;

			else

				urb->interval = 1 << (ep->desc.bInterval - 1);

			urb->complete = isoc_irq;

			urb->complete = isoc_irq;

			urb->number_of_packets = npkt;

			urb->number_of_packets = npkt;

			for (i = 0; i < npkt; i++) {

			for (i = 0; i < npkt; i++) {