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USB: g_serial: fix tty cleanup on unload

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Call put_tty_driver() in cleanup function, to fix Oops when trying to open
gadget serial char device after module unload.

Signed-off-by: Jon Povey <jon.povey@racelogic.co.uk>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jon Povey 2010-06-14 19:42:10 +09:00 • committed by Greg Kroah-Hartman
parent 44a0c0190b
commit b23097b793
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/gadget/u_serial.c
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@ -1184,6 +1184,7 @@ void gserial_cleanup(void)
n_ports = 0; n_ports = 0;
tty_unregister_driver(gs_tty_driver); tty_unregister_driver(gs_tty_driver);
put_tty_driver(gs_tty_driver);
gs_tty_driver = NULL; gs_tty_driver = NULL;
pr_debug("%s: cleaned up ttyGS* support\n", __func__); pr_debug("%s: cleaned up ttyGS* support\n", __func__);