621 	struct vb2_queue *src_q, *dst_q;  in v4l2_m2m_poll()  local
637 	src_q = v4l2_m2m_get_src_vq(m2m_ctx);  in v4l2_m2m_poll()
645 	if ((!src_q->streaming || list_empty(&src_q->queued_list))  in v4l2_m2m_poll()
651 	spin_lock_irqsave(&src_q->done_lock, flags);  in v4l2_m2m_poll()
652 	if (list_empty(&src_q->done_list))  in v4l2_m2m_poll()
653 		poll_wait(file, &src_q->done_wq, wait);  in v4l2_m2m_poll()
654 	spin_unlock_irqrestore(&src_q->done_lock, flags);  in v4l2_m2m_poll()
671 	spin_lock_irqsave(&src_q->done_lock, flags);  in v4l2_m2m_poll()
672 	if (!list_empty(&src_q->done_list))  in v4l2_m2m_poll()
673 		src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,  in v4l2_m2m_poll()
678 	spin_unlock_irqrestore(&src_q->done_lock, flags);  in v4l2_m2m_poll()