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;