211 	struct circ_buf *xmit = &s->port.state->xmit;  in dma_tx_callback()  local
220 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in dma_tx_callback()
262 	struct circ_buf *xmit = &s->port.state->xmit;  in mxs_auart_tx_chars()  local
272 		while (!uart_circ_empty(xmit) && !uart_tx_stopped(&s->port)) {  in mxs_auart_tx_chars()
274 				     CIRC_CNT_TO_END(xmit->head,  in mxs_auart_tx_chars()
275 						     xmit->tail,  in mxs_auart_tx_chars()
277 			memcpy(buffer + i, xmit->buf + xmit->tail, size);  in mxs_auart_tx_chars()
278 			xmit->tail = (xmit->tail + size) & (UART_XMIT_SIZE - 1);  in mxs_auart_tx_chars()
307 		if (!uart_circ_empty(xmit) && !uart_tx_stopped(&s->port)) {  in mxs_auart_tx_chars()
309 			writel(xmit->buf[xmit->tail],  in mxs_auart_tx_chars()
311 			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in mxs_auart_tx_chars()
315 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in mxs_auart_tx_chars()
318 	if (uart_circ_empty(&(s->port.state->xmit)))  in mxs_auart_tx_chars()