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V4L/DVB (11712): gspca - main: Set the current alternate setting only when needed

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Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-Francois Moine 2009-04-21 14:05:44 -03:00 committed by Mauro Carvalho Chehab
parent 30d35e4950
commit 8dd07ef123
1 changed files with 3 additions and 1 deletions
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4
drivers/media/video/gspca/gspca.c
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@ -486,7 +486,7 @@ static struct usb_host_endpoint *get_ep(struct gspca_dev *gspca_dev)
}
PDEBUG(D_STREAM, "use alt %d ep 0x%02x",
i, ep->desc.bEndpointAddress);
if (i > 0) {
if (gspca_dev->nbalt > 1) {
ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, i);
if (ret < 0) {
err("set alt %d err %d", i, ret);
@ -653,6 +653,8 @@ static int gspca_set_alt0(struct gspca_dev *gspca_dev)
{
int ret;
if (gspca_dev->alt == 0)
return 0;
ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
if (ret < 0)
PDEBUG(D_ERR|D_STREAM, "set alt 0 err %d", ret);