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Diffstat (limited to 'arch/mn10300/kernel/mn10300-serial.c')
-rw-r--r--arch/mn10300/kernel/mn10300-serial.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mn10300/kernel/mn10300-serial.c b/arch/mn10300/kernel/mn10300-serial.c
index aa07d0cd1905..59b9c4bf9583 100644
--- a/arch/mn10300/kernel/mn10300-serial.c
+++ b/arch/mn10300/kernel/mn10300-serial.c
@@ -566,6 +566,11 @@ static void mn10300_serial_transmit_interrupt(struct mn10300_serial_port *port)
566{ 566{
567 _enter("%s", port->name); 567 _enter("%s", port->name);
568 568
569 if (!port->uart.info || !port->uart.info->port.tty) {
570 mn10300_serial_dis_tx_intr(port);
571 return;
572 }
573
569 if (uart_tx_stopped(&port->uart) || 574 if (uart_tx_stopped(&port->uart) ||
570 uart_circ_empty(&port->uart.info->xmit)) 575 uart_circ_empty(&port->uart.info->xmit))
571 mn10300_serial_dis_tx_intr(port); 576 mn10300_serial_dis_tx_intr(port);