korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-18 16:44:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

[media] gspca - main: Fix the isochronous transfer interval

Browse Source 
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>
This commit is contained in:
Jean-François Moine 2011-08-10 07:28:44 -03:00 committed by Mauro Carvalho Chehab
parent 8d64d4f67e
commit 480992b357
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/media/video/gspca/gspca.c
View File

@ -754,7 +754,10 @@ static int create_urbs(struct gspca_dev *gspca_dev,
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++) {