107 static int last_trb(struct xhci_hcd *xhci, struct xhci_ring *ring,  in last_trb()  function
131 	if (last_trb(xhci, ring, *seg, *trb)) {  in next_trb()
152 			!last_trb(xhci, ring, ring->deq_seg, ring->dequeue))  in inc_deq()
161 		if (last_trb(xhci, ring, ring->deq_seg, ring->dequeue)) {  in inc_deq()
172 	} while (last_trb(xhci, ring, ring->deq_seg, ring->dequeue));  in inc_deq()
201 			!last_trb(xhci, ring, ring->enq_seg, ring->enqueue))  in inc_enq()
209 	while (last_trb(xhci, ring, ring->enq_seg, next)) {  in inc_enq()
491 		if (new_deq == cur_td->last_trb)  in xhci_find_new_dequeue_state()
568 					cur_trb != cur_td->last_trb)  in td_to_noop()
578 		if (cur_trb == cur_td->last_trb)  in td_to_noop()
917 	if (last_trb(xhci, ep_ring, ep_ring->deq_seg, ep_ring->dequeue)) {  in update_ring_for_set_deq_completion()
926 		if (last_trb(xhci, ep_ring, ep_ring->deq_seg,  in update_ring_for_set_deq_completion()
1847 		while (ep_ring->dequeue != td->last_trb)  in finish_td()
1920 		} else if (event_trb != td->last_trb) {  in process_ctrl_td()
1935 		if (event_trb == ep_ring->dequeue || event_trb == td->last_trb)  in process_ctrl_td()
1944 		if (event_trb != ep_ring->dequeue && event_trb != td->last_trb)  in process_ctrl_td()
1962 				event_trb != td->last_trb)  in process_ctrl_td()
1977 		if (event_trb == td->last_trb) {  in process_ctrl_td()
2065 		if (event_trb != td->last_trb)  in process_isoc_td()
2125 	while (ep_ring->dequeue != td->last_trb)  in skip_isoc_td()
2150 		if (event_trb != td->last_trb ||  in process_bulk_intr_td()
2194 	} else if (event_trb == td->last_trb) {  in process_bulk_intr_td()
2473 				td->last_trb, event_dma, false);  in handle_tx_event()
2509 					  ep_ring->dequeue, td->last_trb,  in handle_tx_event()
2862 		while (last_trb(xhci, ring, ring->enq_seg, next)) {  in prepare_ring()
3184 			td->last_trb = ep_ring->enqueue;  in queue_bulk_sg_tx()
3188 			urb_priv->td[1]->last_trb = ep_ring->enqueue;  in queue_bulk_sg_tx()
3360 			td->last_trb = ep_ring->enqueue;  in xhci_queue_bulk_tx()
3364 			urb_priv->td[1]->last_trb = ep_ring->enqueue;  in xhci_queue_bulk_tx()
3509 	td->last_trb = ep_ring->enqueue;  in xhci_queue_ctrl_tx()
3807 				td->last_trb = ep_ring->enqueue;  in xhci_queue_isoc_tx()
3877 	urb_priv->td[0]->last_trb = ep_ring->enqueue;  in xhci_queue_isoc_tx()