diff options
Diffstat (limited to 'linux/drivers/media/video/cx18/cx18-queue.c')
| -rw-r--r-- | linux/drivers/media/video/cx18/cx18-queue.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/linux/drivers/media/video/cx18/cx18-queue.c b/linux/drivers/media/video/cx18/cx18-queue.c index 6990b77c6..a31da49f9 100644 --- a/linux/drivers/media/video/cx18/cx18-queue.c +++ b/linux/drivers/media/video/cx18/cx18-queue.c @@ -78,12 +78,13 @@ struct cx18_buffer *cx18_dequeue(struct cx18_stream *s, struct cx18_queue *q) return buf; } -struct cx18_buffer *cx18_queue_find_buf(struct cx18_stream *s, u32 id, +struct cx18_buffer *cx18_queue_get_buf_irq(struct cx18_stream *s, u32 id, u32 bytesused) { struct cx18 *cx = s->cx; struct list_head *p; + spin_lock(&s->qlock); list_for_each(p, &s->q_free.list) { struct cx18_buffer *buf = list_entry(p, struct cx18_buffer, list); @@ -92,17 +93,19 @@ struct cx18_buffer *cx18_queue_find_buf(struct cx18_stream *s, u32 id, continue; buf->bytesused = bytesused; /* the transport buffers are handled differently, - so there is no need to move them to the full queue */ - if (s->type == CX18_ENC_STREAM_TYPE_TS) - return buf; - s->q_free.buffers--; - s->q_free.length -= s->buf_size; - s->q_full.buffers++; - s->q_full.length += s->buf_size; - s->q_full.bytesused += buf->bytesused; - list_move_tail(&buf->list, &s->q_full.list); + they are not moved to the full queue */ + if (s->type != CX18_ENC_STREAM_TYPE_TS) { + s->q_free.buffers--; + s->q_free.length -= s->buf_size; + s->q_full.buffers++; + s->q_full.length += s->buf_size; + s->q_full.bytesused += buf->bytesused; + list_move_tail(&buf->list, &s->q_full.list); + } + spin_unlock(&s->qlock); return buf; } + spin_unlock(&s->qlock); CX18_ERR("Cannot find buffer %d for stream %s\n", id, s->name); return NULL; } @@ -214,10 +217,10 @@ int cx18_stream_alloc(struct cx18_stream *s) s->name, s->buffers, s->buf_size, s->buffers * s->buf_size / 1024); - if (((char *)&cx->scb->cpu_mdl[cx->mdl_offset + s->buffers] - - (char *)cx->scb) > SCB_RESERVED_SIZE) { - unsigned bufsz = (((char *)cx->scb) + SCB_RESERVED_SIZE - - ((char *)cx->scb->cpu_mdl)); + if (((char __iomem *)&cx->scb->cpu_mdl[cx->mdl_offset + s->buffers] - + (char __iomem *)cx->scb) > SCB_RESERVED_SIZE) { + unsigned bufsz = (((char __iomem *)cx->scb) + SCB_RESERVED_SIZE - + ((char __iomem *)cx->scb->cpu_mdl)); CX18_ERR("Too many buffers, cannot fit in SCB area\n"); CX18_ERR("Max buffers = %zd\n", |