351 	struct circ_buf *xmit = &sport->port.state->xmit;  in lpuart_dma_tx()  local
359 	sport->dma_tx_bytes = uart_circ_chars_pending(xmit);  in lpuart_dma_tx()
361 	if (xmit->tail < xmit->head || xmit->head == 0) {  in lpuart_dma_tx()
363 		sg_init_one(sgl, xmit->buf + xmit->tail, sport->dma_tx_bytes);  in lpuart_dma_tx()
367 		sg_set_buf(sgl, xmit->buf + xmit->tail,  in lpuart_dma_tx()
368 				UART_XMIT_SIZE - xmit->tail);  in lpuart_dma_tx()
369 		sg_set_buf(sgl + 1, xmit->buf, xmit->head);  in lpuart_dma_tx()
398 	struct circ_buf *xmit = &sport->port.state->xmit;  in lpuart_dma_tx_complete()  local
405 	xmit->tail = (xmit->tail + sport->dma_tx_bytes) & (UART_XMIT_SIZE - 1);  in lpuart_dma_tx_complete()
411 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in lpuart_dma_tx_complete()
421 	if (!uart_circ_empty(xmit) && !uart_tx_stopped(&sport->port))  in lpuart_dma_tx_complete()
575 	struct circ_buf *xmit = &sport->port.state->xmit;  in lpuart_transmit_buffer()  local
577 	while (!uart_circ_empty(xmit) &&  in lpuart_transmit_buffer()
579 		writeb(xmit->buf[xmit->tail], sport->port.membase + UARTDR);  in lpuart_transmit_buffer()
580 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in lpuart_transmit_buffer()
584 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in lpuart_transmit_buffer()
587 	if (uart_circ_empty(xmit))  in lpuart_transmit_buffer()
593 	struct circ_buf *xmit = &sport->port.state->xmit;  in lpuart32_transmit_buffer()  local
599 	while (!uart_circ_empty(xmit) && (txcnt < sport->txfifo_size)) {  in lpuart32_transmit_buffer()
600 		lpuart32_write(&sport->port, xmit->buf[xmit->tail], UARTDATA);  in lpuart32_transmit_buffer()
601 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in lpuart32_transmit_buffer()
608 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in lpuart32_transmit_buffer()
611 	if (uart_circ_empty(xmit))  in lpuart32_transmit_buffer()
619 	struct circ_buf *xmit = &sport->port.state->xmit;  in lpuart_start_tx()  local
626 		if (!uart_circ_empty(xmit) && !uart_tx_stopped(port))  in lpuart_start_tx()
678 	struct circ_buf *xmit = &sport->port.state->xmit;  in lpuart_txint()  local
690 	if (uart_circ_empty(xmit) || uart_tx_stopped(&sport->port)) {  in lpuart_txint()
703 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in lpuart_txint()