209 	struct circ_buf *xmit = &s->port.state->xmit;  in dma_tx_callback()  local
218 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in dma_tx_callback()
260 	struct circ_buf *xmit = &s->port.state->xmit;  in mxs_auart_tx_chars()  local
270 		while (!uart_circ_empty(xmit) && !uart_tx_stopped(&s->port)) {  in mxs_auart_tx_chars()
272 				     CIRC_CNT_TO_END(xmit->head,  in mxs_auart_tx_chars()
273 						     xmit->tail,  in mxs_auart_tx_chars()
275 			memcpy(buffer + i, xmit->buf + xmit->tail, size);  in mxs_auart_tx_chars()
276 			xmit->tail = (xmit->tail + size) & (UART_XMIT_SIZE - 1);  in mxs_auart_tx_chars()
305 		if (!uart_circ_empty(xmit) && !uart_tx_stopped(&s->port)) {  in mxs_auart_tx_chars()
307 			writel(xmit->buf[xmit->tail],  in mxs_auart_tx_chars()
309 			xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in mxs_auart_tx_chars()
313 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in mxs_auart_tx_chars()
316 	if (uart_circ_empty(&(s->port.state->xmit)))  in mxs_auart_tx_chars()