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)
 {
         _enter("%s", port->name);
 
+        if (!port->uart.info || !port->uart.info->port.tty) {
+                mn10300_serial_dis_tx_intr(port);
+                return;
+        }
+
         if (uart_tx_stopped(&port->uart) ||
             uart_circ_empty(&port->uart.info->xmit))
                 mn10300_serial_dis_tx_intr(port);