From abb096de82f6f920a06ca935f76925261e66b556 Mon Sep 17 00:00:00 2001 From: Andy Walls Date: Fri, 12 Dec 2008 15:50:27 -0300 Subject: V4L/DVB (9804): cx18: Avoid making firmware API calls with the queue lock held cx18: Avoid making firmware API calls with the queue lock held. The source of MPEG strem corruption when not holding the queue lock was found to be that the MPEG buffer could be retrieved by the user app before it was sync'ed for the host cpu. Incoming buffers are now sync'ed before being put on q_full and releasing the queue lock. We can thus avoid the sometimes lengthy call to the firmware for CPU_DE_SET_MDL while holding the queue lock, so we can get better performance. Signed-off-by: Andy Walls Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx18/cx18-streams.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/media/video/cx18/cx18-streams.h') diff --git a/drivers/media/video/cx18/cx18-streams.h b/drivers/media/video/cx18/cx18-streams.h index 635d34b75ab1..420e0a172945 100644 --- a/drivers/media/video/cx18/cx18-streams.h +++ b/drivers/media/video/cx18/cx18-streams.h @@ -29,7 +29,7 @@ int cx18_streams_register(struct cx18 *cx); void cx18_streams_cleanup(struct cx18 *cx, int unregister); /* Capture related */ -void cx18_stream_load_fw_queue_nolock(struct cx18_stream *s); +void cx18_stream_load_fw_queue(struct cx18_stream *s); struct cx18_queue *cx18_stream_put_buf_fw(struct cx18_stream *s, struct cx18_buffer *buf); int cx18_start_v4l2_encode_stream(struct cx18_stream *s); -- cgit