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TTY: hso, free tty_driver

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Do not leak tty_driver structure on each module removal. Also do
proper frees in fail paths of module_init.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Jan Dumon <j.dumon@option.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2012-04-02 13:54:04 +02:00 committed by Greg Kroah-Hartman
parent 005ce07f80
commit d230788f76
1 changed files with 8 additions and 4 deletions
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12
drivers/net/usb/hso.c
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@ -3332,7 +3332,7 @@ static int __init hso_init(void)
if (result) {
printk(KERN_ERR "%s - tty_register_driver failed(%d)\n",
__func__, result);
return result;
goto err_free_tty;
}
/* register this module as an usb driver */
@ -3340,13 +3340,16 @@ static int __init hso_init(void)
if (result) {
printk(KERN_ERR "Could not register hso driver? error: %d\n",
result);
/* cleanup serial interface */
tty_unregister_driver(tty_drv);
return result;
goto err_unreg_tty;
}
/* done */
return 0;
err_unreg_tty:
tty_unregister_driver(tty_drv);
err_free_tty:
put_tty_driver(tty_drv);
return result;
}
static void __exit hso_exit(void)
@ -3354,6 +3357,7 @@ static void __exit hso_exit(void)
printk(KERN_INFO "hso: unloaded\n");
tty_unregister_driver(tty_drv);
put_tty_driver(tty_drv);
/* deregister the usb driver */
usb_deregister(&hso_driver);
}