[media] gspca - main: Fix the isochronous transfer interval
For USB speeds different of 'low', the bInterval value is logarithmic.
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index a3c2d36d..85d2469 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -754,7 +754,10 @@
ep->desc.bEndpointAddress);
urb->transfer_flags = URB_ISO_ASAP
| URB_NO_TRANSFER_DMA_MAP;
- urb->interval = ep->desc.bInterval;
+ if (gspca_dev->dev->speed == USB_SPEED_LOW)
+ urb->interval = ep->desc.bInterval;
+ else
+ urb->interval = 1 << (ep->desc.bInterval - 1);
urb->complete = isoc_irq;
urb->number_of_packets = npkt;
for (i = 0; i < npkt; i++) {