diff options
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 179cbc14ee5..ebaa2425fb5 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -475,10 +475,18 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev) xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK : USB_ENDPOINT_XFER_ISOC; i = gspca_dev->alt; /* previous alt setting */ - while (--i >= 0) { - ep = alt_xfer(&intf->altsetting[i], xfer); - if (ep) - break; + if (gspca_dev->cam.reverse_alts) { + while (++i < gspca_dev->nbalt) { + ep = alt_xfer(&intf->altsetting[i], xfer); + if (ep) + break; + } + } else { + while (--i >= 0) { + ep = alt_xfer(&intf->altsetting[i], xfer); + if (ep) + break; + } } if (ep == NULL) { err("no transfer endpoint found"); @@ -599,7 +607,11 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev) /* set the higher alternate setting and * loop until urb submit succeeds */ - gspca_dev->alt = gspca_dev->nbalt; + if (gspca_dev->cam.reverse_alts) + gspca_dev->alt = 0; + else + gspca_dev->alt = gspca_dev->nbalt; + if (gspca_dev->sd_desc->isoc_init) { ret = gspca_dev->sd_desc->isoc_init(gspca_dev); if (ret < 0) |