V4L/DVB: videobuf: add queue argument to videobuf_waiton()

videobuf_waiton() must unlock and relock ext_lock if it has to wait.
For that to happen it needs the videobuf_queue pointer.

Don't attempt to unlock/relock q->ext_lock unless it was locked in the
first place.

vb->state has to be protected by a spinlock to be safe.

This patch is based on code from Mauro Carvalho Chehab <mchehab@redhat.com>.

[mchehab@redhat.com: add extra argument to a few missing places]
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/video/videobuf-dvb.c b/drivers/media/video/videobuf-dvb.c
index 3f76398968b8..3de7c7e4402d 100644
--- a/drivers/media/video/videobuf-dvb.c
+++ b/drivers/media/video/videobuf-dvb.c
@@ -57,7 +57,7 @@ static int videobuf_dvb_thread(void *data)
                 buf = list_entry(dvb->dvbq.stream.next,
                                  struct videobuf_buffer, stream);
                 list_del(&buf->stream);
-                err = videobuf_waiton(buf,0,1);
+                err = videobuf_waiton(&dvb->dvbq, buf, 0, 1);
 
                 /* no more feeds left or stop_feed() asked us to quit */
                 if (0 == dvb->nfeeds)