diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 5fe2135..aa4b0d7 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -305,8 +305,7 @@
  * Do the resource freeing and refcount dropping for the port.
  * Avoid freeing the console.
  *
- * Called asynchronously after the last tty kref is dropped,
- * and the tty layer has already done the tty_shutdown(tty);
+ * Called asynchronously after the last tty kref is dropped.
  */
 static void serial_cleanup(struct tty_struct *tty)
 {