diff options
Diffstat (limited to 'drivers/tty/serial/sunsab.c')
| -rw-r--r-- | drivers/tty/serial/sunsab.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/serial/sunsab.c b/drivers/tty/serial/sunsab.c index b9598b227a45..b339fe4811cd 100644 --- a/drivers/tty/serial/sunsab.c +++ b/drivers/tty/serial/sunsab.c @@ -436,7 +436,7 @@ static void sunsab_start_tx(struct uart_port *port) struct circ_buf *xmit = &up->port.state->xmit; int i; - if (uart_circ_empty(xmit)) + if (uart_circ_empty(xmit) || uart_tx_stopped(port)) return; up->interrupt_mask1 &= ~(SAB82532_IMR1_ALLS|SAB82532_IMR1_XPR); @@ -468,6 +468,9 @@ static void sunsab_send_xchar(struct uart_port *port, char ch) struct uart_sunsab_port *up = (struct uart_sunsab_port *) port; unsigned long flags; + if (ch == __DISABLED_CHAR) + return; + spin_lock_irqsave(&up->port.lock, flags); sunsab_tec_wait(up); |