1646 	while (le32_to_cpu(*tx->head_cpu_ptr) != (tx->last_head)) {  in lan743x_tx_release_completed_descriptors()
1647 		lan743x_tx_release_desc(tx, tx->last_head, false);  in lan743x_tx_release_completed_descriptors()
1648 		tx->last_head = lan743x_tx_next_index(tx, tx->last_head);  in lan743x_tx_release_completed_descriptors()
1656 	original_head = tx->last_head;  in lan743x_tx_release_all_descriptors()
1658 		lan743x_tx_release_desc(tx, tx->last_head, true);  in lan743x_tx_release_all_descriptors()
1659 		tx->last_head = lan743x_tx_next_index(tx, tx->last_head);  in lan743x_tx_release_all_descriptors()
1660 	} while (tx->last_head != original_head);  in lan743x_tx_release_all_descriptors()
1682 	int last_head = tx->last_head;  in lan743x_tx_get_avail_desc()  local
1685 	if (last_tail >= last_head)  in lan743x_tx_get_avail_desc()
1686 		return tx->ring_size - last_tail + last_head - 1;  in lan743x_tx_get_avail_desc()
1688 		return last_head - last_tail - 1;  in lan743x_tx_get_avail_desc()
2267 	tx->last_head = lan743x_csr_read(adapter, TX_HEAD(tx->channel_number));  in lan743x_tx_open()
2448 	if (rx->last_head < 0 || rx->last_head >= rx->ring_size)  in lan743x_rx_process_buffer()
2451 	if (rx->last_head == current_head_index)  in lan743x_rx_process_buffer()
2454 	descriptor = &rx->ring_cpu_ptr[rx->last_head];  in lan743x_rx_process_buffer()
2457 	buffer_info = &rx->buffer_info[rx->last_head];  in lan743x_rx_process_buffer()
2464 		int index = lan743x_rx_next_index(rx, rx->last_head);  in lan743x_rx_process_buffer()
2498 	if (lan743x_rx_init_ring_element(rx, rx->last_head,  in lan743x_rx_process_buffer()
2504 		lan743x_rx_reuse_ring_element(rx, rx->last_head);  in lan743x_rx_process_buffer()
2548 		rx->last_head = extension_index;  in lan743x_rx_process_buffer()
2570 	rx->last_tail = rx->last_head;  in lan743x_rx_process_buffer()
2571 	rx->last_head = lan743x_rx_next_index(rx, rx->last_head);  in lan743x_rx_process_buffer()
2649 	rx->last_head = 0;  in lan743x_rx_ring_cleanup()
2713 	rx->last_head = 0;  in lan743x_rx_ring_init()
2832 	rx->last_head = lan743x_csr_read(adapter, RX_HEAD(rx->channel_number));  in lan743x_rx_open()
2833 	if (rx->last_head) {  in lan743x_rx_open()