diff options
Diffstat (limited to 'drivers/tty/serial/cpm_uart.c')
| -rw-r--r-- | drivers/tty/serial/cpm_uart.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/tty/serial/cpm_uart.c b/drivers/tty/serial/cpm_uart.c index df56c6c5af..a927478f58 100644 --- a/drivers/tty/serial/cpm_uart.c +++ b/drivers/tty/serial/cpm_uart.c @@ -648,7 +648,7 @@ static int cpm_uart_tx_pump(struct uart_port *port) int count; struct uart_cpm_port *pinfo = container_of(port, struct uart_cpm_port, port); - struct circ_buf *xmit = &port->state->xmit; + struct tty_port *tport = &port->state->port; /* Handle xon/xoff */ if (port->x_char) { @@ -673,7 +673,7 @@ static int cpm_uart_tx_pump(struct uart_port *port) return 1; } - if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { + if (kfifo_is_empty(&tport->xmit_fifo) || uart_tx_stopped(port)) { cpm_uart_stop_tx(port); return 0; } @@ -681,16 +681,10 @@ static int cpm_uart_tx_pump(struct uart_port *port) /* Pick next descriptor and fill from buffer */ bdp = pinfo->tx_cur; - while (!(in_be16(&bdp->cbd_sc) & BD_SC_READY) && !uart_circ_empty(xmit)) { - count = 0; + while (!(in_be16(&bdp->cbd_sc) & BD_SC_READY) && + !kfifo_is_empty(&tport->xmit_fifo)) { p = cpm2cpu_addr(in_be32(&bdp->cbd_bufaddr), pinfo); - while (count < pinfo->tx_fifosize) { - *p++ = xmit->buf[xmit->tail]; - uart_xmit_advance(port, 1); - count++; - if (uart_circ_empty(xmit)) - break; - } + count = uart_fifo_out(port, p, pinfo->tx_fifosize); out_be16(&bdp->cbd_datlen, count); setbits16(&bdp->cbd_sc, BD_SC_READY); /* Get next BD. */ @@ -701,10 +695,10 @@ static int cpm_uart_tx_pump(struct uart_port *port) } pinfo->tx_cur = bdp; - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) + if (kfifo_len(&tport->xmit_fifo) < WAKEUP_CHARS) uart_write_wakeup(port); - if (uart_circ_empty(xmit)) { + if (kfifo_is_empty(&tport->xmit_fifo)) { cpm_uart_stop_tx(port); return 0; } |