From 19bc5133dae9562e8824ef101464061f9854c1d8 Mon Sep 17 00:00:00 2001 From: Brandon Philips Date: Tue, 13 Nov 2007 20:05:38 -0300 Subject: V4L/DVB (6601): V4L: videobuf-core locking fixes and comments - Add comments to functions that require that caller hold q->lock - Add __videobuf_mmap_free that doesn't hold q->lock for use within videobuf - Add locking to videobuf_mmap_free - Fix linux/drivers/media/common/saa7146_video.c which was holding lock around videobuf_read_stop - Add locking to functions that operate on a queue - Add videobuf_stop to take care of stopping in both the read and stream case TODO: bttv still has an unsafe call to videobuf_queue_is_busy Signed-off-by: Brandon Philips Signed-off-by: Mauro Carvalho Chehab --- include/media/videobuf-core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/media') diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h index 0fa5d591255..4fd5d0eaa93 100644 --- a/include/media/videobuf-core.h +++ b/include/media/videobuf-core.h @@ -208,6 +208,8 @@ int videobuf_cgmbuf(struct videobuf_queue *q, int videobuf_streamon(struct videobuf_queue *q); int videobuf_streamoff(struct videobuf_queue *q); +void videobuf_stop(struct videobuf_queue *q); + int videobuf_read_start(struct videobuf_queue *q); void videobuf_read_stop(struct videobuf_queue *q); ssize_t videobuf_read_stream(struct videobuf_queue *q, -- cgit v1.2.3