Lines Matching refs:xmit
157 struct circ_buf *xmit = &port->state->xmit;
166 if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
172 *CSR_UARTDR = xmit->buf[xmit->tail];
173 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
175 if (uart_circ_empty(xmit))
179 if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
182 if (uart_circ_empty(xmit))