-static int
-dt3155_threadfn(void *arg)
-{
- struct dt3155_priv *pd = arg;
- struct videobuf_buffer *vb;
- unsigned long flags;
-
- while (1) {
- wait_event_interruptible(pd->do_dma,
- kthread_should_stop() || !list_empty(&pd->dmaq));
- if (kthread_should_stop())
- break;
-
- spin_lock_irqsave(&pd->lock, flags);
- if (pd->curr_buf) /* dma is active */
- goto done;
- if (list_empty(&pd->dmaq)) /* no empty biffers */
- goto done;
- vb = list_first_entry(&pd->dmaq, typeof(*vb), queue);
- list_del(&vb->queue);
- if (vb->state == VIDEOBUF_QUEUED) {
- vb->state = VIDEOBUF_ACTIVE;
- pd->curr_buf = vb;
- spin_unlock_irqrestore(&pd->lock, flags);
- /* start dma */
- dt3155_start_acq(pd);
- continue;
- } else
- printk(KERN_DEBUG "%s(): This is a BUG\n", __func__);
-done:
- spin_unlock_irqrestore(&pd->lock, flags);
- }
- return 0;
-}
-