V4L/DVB (10102): uvcvideo: Ignore interrupt endpoint for built-in iSight webcams.

Built-in iSight webcams have an interrupt endpoint but spit proprietary data
that don't conform to the UVC status endpoint messages. Don't try to handle
the interrupt endpoint for those cameras.

Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c
index 1054c7656aefb78e59c9340853835b12f0b1d5dc..18a61928f4f6c804476c5071fdb651d6c244b14f 100644 (file)
--- a/drivers/media/video/uvc/uvc_driver.c
+++ b/drivers/media/video/uvc/uvc_driver.c
@@ -1147,8 +1147,13 @@ next_descriptor:
                buffer += buffer[0];
        }
 
-       /* Check if the optional status endpoint is present. */
-       if (alts->desc.bNumEndpoints == 1) {
+       /* Check if the optional status endpoint is present. Built-in iSight
+        * webcams have an interrupt endpoint but spit proprietary data that
+        * don't conform to the UVC status endpoint messages. Don't try to
+        * handle the interrupt endpoint for those cameras.
+        */
+       if (alts->desc.bNumEndpoints == 1 &&
+           !(dev->quirks & UVC_QUIRK_BUILTIN_ISIGHT)) {
                struct usb_host_endpoint *ep = &alts->endpoint[0];
                struct usb_endpoint_descriptor *desc = &ep->desc;