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authorBrandon Philips <brandon@ifup.org>2007-11-13 20:05:38 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-12-11 18:08:08 -0200
commit19bc5133dae9562e8824ef101464061f9854c1d8 (patch)
tree8395e2da25f3cf5291e24f972d31a215ddf421a5 /include/media
parent63337dd3f5506628e4831b08e39e09d7f1407769 (diff)
downloadop-kernel-dev-19bc5133dae9562e8824ef101464061f9854c1d8.zip
op-kernel-dev-19bc5133dae9562e8824ef101464061f9854c1d8.tar.gz
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 <bphilips@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'include/media')
-rw-r--r--include/media/videobuf-core.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h
index 0fa5d59..4fd5d0e 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,
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