[media] omap3isp: Cancel all queued buffers when stopping the video stream

When stopping a video stream the driver waits for ongoing DMA opeations
to complete for the currently active buffer, but doesn't release the
non-active queued buffers. This isn't a problem in most cases as the
video device is usually closed after the stream is stopped, which will
release all the buffers. However the problem would generate a warning
when switching to videobuf2. Fix it by cancelling all buffers after DMA
operations have completed.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/platform/omap3isp/ispvideo.c

@@ -1115,6 +1115,8 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type)
 
 	/* Stop the stream. */
 	omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_STOPPED);
+	omap3isp_video_cancel_stream(video);
+
 	mutex_lock(&video->queue_lock);
 	omap3isp_video_queue_streamoff(&vfh->queue);
 	mutex_unlock(&video->queue_lock);