482 	struct circ_buf *circ;  in neo_copy_data_from_queue_to_uart()  local
487 	circ = &ch->uart_port.state->xmit;  in neo_copy_data_from_queue_to_uart()
490 	if (uart_circ_empty(circ))  in neo_copy_data_from_queue_to_uart()
506 			writeb(circ->buf[circ->tail], &ch->ch_neo_uart->txrx);  in neo_copy_data_from_queue_to_uart()
508 				"Tx data: %x\n", circ->buf[circ->tail]);  in neo_copy_data_from_queue_to_uart()
509 			circ->tail = (circ->tail + 1) & (UART_XMIT_SIZE - 1);  in neo_copy_data_from_queue_to_uart()
524 	head = circ->head & (UART_XMIT_SIZE - 1);  in neo_copy_data_from_queue_to_uart()
525 	tail = circ->tail & (UART_XMIT_SIZE - 1);  in neo_copy_data_from_queue_to_uart()
526 	qlen = uart_circ_chars_pending(circ);  in neo_copy_data_from_queue_to_uart()
539 		memcpy_toio(&ch->ch_neo_uart->txrxburst, circ->buf + tail, s);  in neo_copy_data_from_queue_to_uart()
548 	circ->tail = tail & (UART_XMIT_SIZE - 1);  in neo_copy_data_from_queue_to_uart()
553 	if (uart_circ_empty(circ))  in neo_copy_data_from_queue_to_uart()