diff options
| author | Andy Walls <awalls@radix.net> | 2008-11-28 00:04:21 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-30 09:38:28 -0200 |
| commit | b80e1074c734416987486b7b76b6479faa73f1e2 (patch) | |
| tree | 4f1432c4755b9aa686dd8764a24e404eaa3a550e /drivers/media/video/cx18/cx18-queue.c | |
| parent | be2c6db122467c6b6b55d93dd08d89cb2ee7821c (diff) | |
V4L/DVB (9800): cx18: Eliminate q_io from stream buffer handling
Eliminate q_io from stream buffer handling in anticipation of upcoming
changes in buffer handling. q_io was a holdover from ivtv and it's function
in cx18 was trivial and not necessary. We just push things back onto the
front of q_full now, instead of maintaining a 1 buffer q_io queue.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx18/cx18-queue.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-queue.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/media/video/cx18/cx18-queue.c b/drivers/media/video/cx18/cx18-queue.c index 7b09c9a3ee8..fdfc83ee3d4 100644 --- a/drivers/media/video/cx18/cx18-queue.c +++ b/drivers/media/video/cx18/cx18-queue.c @@ -42,8 +42,8 @@ void cx18_queue_init(struct cx18_queue *q) q->bytesused = 0; } -void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, - struct cx18_queue *q) +void _cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, + struct cx18_queue *q, int to_front) { /* clear the buffer if it is going to be enqueued to the free queue */ if (q == &s->q_free) { @@ -53,7 +53,10 @@ void cx18_enqueue(struct cx18_stream *s, struct cx18_buffer *buf, buf->skipped = 0; } mutex_lock(&s->qlock); - list_add_tail(&buf->list, &q->list); + if (to_front) + list_add(&buf->list, &q->list); /* LIFO */ + else + list_add_tail(&buf->list, &q->list); /* FIFO */ atomic_inc(&q->buffers); q->bytesused += buf->bytesused - buf->readpos; mutex_unlock(&s->qlock); @@ -159,7 +162,6 @@ static void cx18_queue_flush(struct cx18_stream *s, struct cx18_queue *q) void cx18_flush_queues(struct cx18_stream *s) { - cx18_queue_flush(s, &s->q_io); cx18_queue_flush(s, &s->q_full); } |