aboutsummaryrefslogtreecommitdiff
path: root/drivers/usb/class/cdc-acm.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
-rw-r--r--drivers/usb/class/cdc-acm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 02eb60bb679..3f104599347 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -677,7 +677,7 @@ static void acm_tty_close(struct tty_struct *tty, struct file *filp)
/* Perform the closing process and see if we need to do the hardware
shutdown */
- if (tty_port_close_start(&acm->port, tty, filp) == 0)
+ if (!acm || tty_port_close_start(&acm->port, tty, filp) == 0)
return;
acm_port_down(acm, 0);
tty_port_close_end(&acm->port, tty);