last_trb_on_seg
return last_trb_on_seg(seg, trb) && (seg->next == ring->first_seg);
if (trb_is_link(*trb) || last_trb_on_seg(*seg, *trb)) {
if (!last_trb_on_seg(ring->deq_seg, ring->dequeue)) {
if (last_trb_on_seg(ring->deq_seg, ring->dequeue))
if (last_trb_on_seg(ring->enq_seg, ring->enqueue)) {
if (last_trb_on_seg(ep_ring->enq_seg, ep_ring->enqueue)) {
if (last_trb_on_seg(ep_ring->enq_seg, ep_ring->enqueue + 1)) {