V4L/DVB (9809): uvcvideo: Add nodrop module parameter to turn incomplete frame drop off.

The driver drops incomplete uncompressed video frames to avoid confusing
userspace with corrupt data. Add a nodrop module parameter to turn that
behaviour off and make all frames available to userspace.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/media/video/uvc/uvc_video.c b/drivers/media/video/uvc/uvc_video.c
index 186ef9fad80b..b7160b15e780 100644
--- a/drivers/media/video/uvc/uvc_video.c
+++ b/drivers/media/video/uvc/uvc_video.c
@@ -1003,7 +1003,8 @@ int uvc_video_enable(struct uvc_video_device *video, int enable)
                 return 0;
         }
 
-        if (video->streaming->cur_format->flags & UVC_FMT_FLAG_COMPRESSED)
+        if ((video->streaming->cur_format->flags & UVC_FMT_FLAG_COMPRESSED) ||
+            uvc_no_drop_param)
                 video->queue.flags &= ~UVC_QUEUE_DROP_INCOMPLETE;
         else
                 video->queue.flags |= UVC_QUEUE_DROP_INCOMPLETE;