1 files changed, 6 insertions, 8 deletions

diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index ff75a3589e7e..aa6b2ae951ae 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -192,7 +192,7 @@ void usb_serial_put(struct usb_serial *serial)
  * This is the first place a new tty gets used.  Hence this is where we
  * acquire references to the usb_serial structure and the driver module,
  * where we store a pointer to the port, and where we do an autoresume.
- * All these actions are reversed in serial_release().
+ * All these actions are reversed in serial_cleanup().
  */
 static int serial_install(struct tty_driver *driver, struct tty_struct *tty)
 {
@@ -339,15 +339,16 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
 }
 
 /**
- * serial_release - free resources post close/hangup
+ * serial_cleanup - free resources post close/hangup
  * @port: port to free up
  *
  * Do the resource freeing and refcount dropping for the port.
  * Avoid freeing the console.
  *
- * Called when the last tty kref is dropped.
+ * Called asynchronously after the last tty kref is dropped,
+ * and the tty layer has already done the tty_shutdown(tty);
  */
-static void serial_release(struct tty_struct *tty)
+static void serial_cleanup(struct tty_struct *tty)
 {
         struct usb_serial_port *port = tty->driver_data;
         struct usb_serial *serial;
@@ -361,9 +362,6 @@ static void serial_release(struct tty_struct *tty)
 
         dbg("%s - port %d", __func__, port->number);
 
-        /* Standard shutdown processing */
-        tty_shutdown(tty);
-
         tty->driver_data = NULL;
 
         serial = port->serial;
@@ -1210,7 +1208,7 @@ static const struct tty_operations serial_ops = {
         .chars_in_buffer =      serial_chars_in_buffer,
         .tiocmget =             serial_tiocmget,
         .tiocmset =             serial_tiocmset,
-        .shutdown =             serial_release,
+        .cleanup =              serial_cleanup,
         .install =              serial_install,
         .proc_fops =            &serial_proc_fops,
 };