USB: serial: fix generic disconnect implementation

There is no need for the generic disconnect callback to stop the read
and write urbs a second time as this has already been taken care of by
close (which is called from hangup as part of disconnect).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 11 deletions

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 131d6cbeefee..a6d0ac638e0a 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -102,7 +102,7 @@ int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port
 }
 EXPORT_SYMBOL_GPL(usb_serial_generic_open);
 
-static void generic_cleanup(struct usb_serial_port *port)
+void usb_serial_generic_close(struct usb_serial_port *port)
 {
         unsigned long flags;
         int i;
@@ -120,11 +120,6 @@ static void generic_cleanup(struct usb_serial_port *port)
                         usb_kill_urb(port->read_urbs[i]);
         }
 }
-
-void usb_serial_generic_close(struct usb_serial_port *port)
-{
-        generic_cleanup(port);
-}
 EXPORT_SYMBOL_GPL(usb_serial_generic_close);
 
 int usb_serial_generic_prepare_write_buffer(struct usb_serial_port *port,
@@ -507,11 +502,6 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_resume);
 
 void usb_serial_generic_disconnect(struct usb_serial *serial)
 {
-        int i;
-
-        /* stop reads and writes on all ports */
-        for (i = 0; i < serial->num_ports; ++i)
-                generic_cleanup(serial->port[i]);
 }
 EXPORT_SYMBOL_GPL(usb_serial_generic_disconnect);