releases/2.6.32.17/usb-g_serial-fix-tty-cleanup-on-unload.patch

   1 From b23097b793081358a6d943263c91bae4c955c4e3 Mon Sep 17 00:00:00 2001
   2 From: Jon Povey <jon.povey@racelogic.co.uk>
   3 Date: Mon, 14 Jun 2010 19:42:10 +0900
   4 Subject: USB: g_serial: fix tty cleanup on unload
   5
   6 From: Jon Povey <jon.povey@racelogic.co.uk>
   7
   8 commit b23097b793081358a6d943263c91bae4c955c4e3 upstream.
   9
  10 Call put_tty_driver() in cleanup function, to fix Oops when trying to open
  11 gadget serial char device after module unload.
  12
  13 Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
  14 Acked-by: David Brownell <dbrownell@users.sourceforge.net>
  15 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  16
  17 ---
  18  drivers/usb/gadget/u_serial.c |    1 +
  19  1 file changed, 1 insertion(+)
  20
  21 --- a/drivers/usb/gadget/u_serial.c
  22 +++ b/drivers/usb/gadget/u_serial.c
  23 @@ -1183,6 +1183,7 @@ void gserial_cleanup(void)
  24         n_ports = 0;
  25
  26         tty_unregister_driver(gs_tty_driver);
  27 +       put_tty_driver(gs_tty_driver);
  28         gs_tty_driver = NULL;
  29
  30         pr_debug("%s: cleaned up ttyGS* support\n", __func__);