Lines Matching defs:xmit
636 struct circ_buf *xmit = &port->info->xmit;
660 if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
668 while (!(bdp->cbd_sc & BD_SC_READY) && (xmit->tail != xmit->head)) {
672 *p++ = xmit->buf[xmit->tail];
673 xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
676 if (xmit->head == xmit->tail)
690 if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
693 if (uart_circ_empty(xmit)) {