tree 8395e2da25f3cf5291e24f972d31a215ddf421a5
parent 63337dd3f5506628e4831b08e39e09d7f1407769
author Brandon Philips <brandon@ifup.org> 1194995138 -0300
committer Mauro Carvalho Chehab <mchehab@infradead.org> 1197403688 -0200

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>