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| author | Brandon Philips <brandon@ifup.org> | 2007-11-13 15:05:38 -0800 |
|---|---|---|
| committer | Brandon Philips <brandon@ifup.org> | 2007-11-13 15:05:38 -0800 |
| commit | 09d082411ad4e8f87e4ee8431a920f1234ca2c8c (patch) | |
| tree | 201ac7e4de4b8447341aea1529310e9afbd18716 /linux/include/media/videobuf-core.h | |
| parent | 512f46cb92dd3faf12d28460bb03574ad6a867ab (diff) | |
| download | mediapointer-dvb-s2-09d082411ad4e8f87e4ee8431a920f1234ca2c8c.tar.gz mediapointer-dvb-s2-09d082411ad4e8f87e4ee8431a920f1234ca2c8c.tar.bz2 | |
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>
Diffstat (limited to 'linux/include/media/videobuf-core.h')
| -rw-r--r-- | linux/include/media/videobuf-core.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/linux/include/media/videobuf-core.h b/linux/include/media/videobuf-core.h index 32ea6e8fb..7bc7d3cf0 100644 --- a/linux/include/media/videobuf-core.h +++ b/linux/include/media/videobuf-core.h @@ -212,6 +212,8 @@ 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, |