266 	struct circ_buf *xmit = &up->port.state->xmit;  in m32r_sio_start_tx()  local
271 		if (!uart_circ_empty(xmit)) {  in m32r_sio_start_tx()
272 			serial_out(up, UART_TX, xmit->buf[xmit->tail]);  in m32r_sio_start_tx()
273 			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in m32r_sio_start_tx()
386 	struct circ_buf *xmit = &up->port.state->xmit;  in transmit_chars()  local
397 	if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {  in transmit_chars()
404 		serial_out(up, UART_TX, xmit->buf[xmit->tail]);  in transmit_chars()
405 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in transmit_chars()
407 		if (uart_circ_empty(xmit))  in transmit_chars()
413 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in transmit_chars()
418 	if (uart_circ_empty(xmit))  in transmit_chars()