119 	return (ring->nr_slots - ring->used_slots);  in free_slots()
163 	ring->used_slots++;  in request_slot()
165 	update_max_used_slots(ring, ring->used_slots);  in request_slot()
487 	ring->used_slots = ring->nr_slots;  in alloc_initial_descbuffers()
566 	if (!ring->used_slots)  in free_all_descbuffers()
942 	old_used_slots = ring->used_slots;  in dma_tx_fragment()
956 		ring->used_slots = old_used_slots;  in dma_tx_fragment()
965 		ring->used_slots = old_used_slots;  in dma_tx_fragment()
985 			ring->used_slots = old_used_slots;  in dma_tx_fragment()
1003 			ring->used_slots = old_used_slots;  in dma_tx_fragment()
1118 	firstused = ring->current_slot - ring->used_slots + 1;  in b43legacy_dma_handle_txstatus()
1194 		ring->used_slots--;  in b43legacy_dma_handle_txstatus()
1322 	int used_slots = 0;  in b43legacy_dma_rx()  local
1332 		update_max_used_slots(ring, ++used_slots);  in b43legacy_dma_rx()