440 	    uart_circ_empty(&uap->port.state->xmit)) {  in pl011_dma_tx_callback()
470 	struct circ_buf *xmit = &uap->port.state->xmit;  in pl011_dma_tx_refill()  local
479 	count = uart_circ_chars_pending(xmit);  in pl011_dma_tx_refill()
495 	if (xmit->tail < xmit->head)  in pl011_dma_tx_refill()
496 		memcpy(&dmatx->buf[0], &xmit->buf[xmit->tail], count);  in pl011_dma_tx_refill()
498 		size_t first = UART_XMIT_SIZE - xmit->tail;  in pl011_dma_tx_refill()
505 		memcpy(&dmatx->buf[0], &xmit->buf[xmit->tail], first);  in pl011_dma_tx_refill()
507 			memcpy(&dmatx->buf[first], &xmit->buf[0], second);  in pl011_dma_tx_refill()
549 	xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);  in pl011_dma_tx_refill()
552 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in pl011_dma_tx_refill()
1269 	struct circ_buf *xmit = &uap->port.state->xmit;  in pl011_tx_chars()  local
1303 	if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {  in pl011_tx_chars()
1312 	while (count-- > 0 && pl011_tx_char(uap, xmit->buf[xmit->tail])) {  in pl011_tx_chars()
1313 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in pl011_tx_chars()
1314 		if (uart_circ_empty(xmit))  in pl011_tx_chars()
1318 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in pl011_tx_chars()
1321 	if (uart_circ_empty(xmit)) {  in pl011_tx_chars()