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authorJiri Slaby <jslaby@suse.cz>2012-04-02 13:54:04 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-09 11:18:36 -0700
commitd230788f760043d9c69dbd3928b76f549bff5fb9 (patch)
tree186aec69597bfe74ccb9aba87b87701d336db05b /drivers/net/usb/hso.c
parent005ce07f8068f9970f522a1a4ffeb9a9d108479a (diff)
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TTY: hso, free tty_driver
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>
Diffstat (limited to 'drivers/net/usb/hso.c')
-rw-r--r--drivers/net/usb/hso.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index abe47ad59479..cdc589edeaf6 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -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);
}