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| author | Brandon Philips <brandon@ifup.org> | 2007-11-14 00:05:38 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-12-11 21:08:08 +0100 |
| commit | 19bc5133dae9562e8824ef101464061f9854c1d8 (patch) | |
| tree | 8395e2da25f3cf5291e24f972d31a215ddf421a5 /include/media | |
| parent | V4L/DVB (6581): Fix: avoids negative vma usage count (diff) | |
| download | linux-19bc5133dae9562e8824ef101464061f9854c1d8.tar.xz linux-19bc5133dae9562e8824ef101464061f9854c1d8.zip | |
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.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/media/videobuf-core.h b/include/media/videobuf-core.h index 0fa5d5912555..4fd5d0eaa935 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, |