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>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/media/video/uvc/uvc_driver.c b/drivers/media/video/uvc/uvc_driver.c
index 1054c7656aef..18a61928f4f6 100644
--- 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;