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V4L/DVB (13897): gspca - main: Check the interface class at probe time. 

The USB video interface was checked as having the number zero, but
some webcams have other values. The test is now done on the interface
class which may be either 255 (vendor spec) or 0 (class per interface).

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 2010-01-05 04:44:00 -03:00 committed by Mauro Carvalho Chehab
parent 38719d45f9
commit 52a9d3ef00
1 changed files with 6 additions and 2 deletions
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8
drivers/media/video/gspca/gspca.c
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@ -2062,9 +2062,13 @@ int gspca_dev_probe(struct usb_interface *intf,
PDEBUG(D_ERR, "Too many config");
return -ENODEV;
}
/* check the interface class and ignore the sound interfaces */
interface = &intf->cur_altsetting->desc;
if (interface->bInterfaceNumber > 0) {
PDEBUG(D_ERR, "intf != 0");
if (interface->bInterfaceClass != USB_CLASS_VENDOR_SPEC
&& interface->bInterfaceClass != USB_CLASS_PER_INTERFACE) {
PDEBUG(D_PROBE, "Interface class %d not handled here",
interface->bInterfaceClass);
return -ENODEV;
}