summaryrefslogtreecommitdiff
path: root/drivers/tty/serial/pmac_zilog.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/tty/serial/pmac_zilog.c')
-rw-r--r--drivers/tty/serial/pmac_zilog.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c
index e9d420ff3931..f7ad5b903055 100644
--- a/drivers/tty/serial/pmac_zilog.c
+++ b/drivers/tty/serial/pmac_zilog.c
@@ -653,6 +653,8 @@ static void pmz_start_tx(struct uart_port *port)
} else {
struct circ_buf *xmit = &port->state->xmit;
+ if (uart_circ_empty(xmit))
+ goto out;
write_zsdata(uap, xmit->buf[xmit->tail]);
zssync(uap);
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
@@ -661,6 +663,7 @@ static void pmz_start_tx(struct uart_port *port)
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&uap->port);
}
+ out:
pmz_debug("pmz: start_tx() done.\n");
}
@@ -1092,7 +1095,7 @@ static void pmz_convert_to_zs(struct uart_pmac_port *uap, unsigned int cflag,
uap->port.read_status_mask = Rx_OVR;
if (iflag & INPCK)
uap->port.read_status_mask |= CRC_ERR | PAR_ERR;
- if (iflag & (BRKINT | PARMRK))
+ if (iflag & (IGNBRK | BRKINT | PARMRK))
uap->port.read_status_mask |= BRK_ABRT;
uap->port.ignore_status_mask = 0;