usb_serial: Fix oops when unexisting usb serial device is opened.

[cascardo/linux.git] / drivers / usb / serial / usb-serial.c

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index d595aa5..a842164 100644 (file)
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -333,6 +333,9 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
 {
        struct usb_serial_port *port = tty->driver_data;
 
+       if (!port)
+               return;
+
        dbg("%s - port %d", __func__, port->number);