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ACPI: asus-laptop: Fix failure exits

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> Subject         : drivers/misc/asus-laptop.c:*: error: 'struct led_classdev' has no member named 'class_dev'
> References      : http://lkml.org/lkml/2007/7/22/299
> Submitter       : Gabriel C <nix.or.die@googlemail.com>

Fallout from f8a7c6fe14.  However, looking
at it shows that checks done in ASUS_LED_UNREGISTER() can't trigger
at all (we never get to asus_led_exit() if registration fails) and
if that registration fails, we actually leak stuff.  IOW, it's worse
than just replacing class_dev with dev in there - the tests themselves
had been papering over the lousy cleanup logics.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Al Viro 2007-07-23 11:21:34 +01:00 committed by Len Brown
parent 3cc2649b87
commit 3b0d71170d
1 changed files with 21 additions and 11 deletions
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32
drivers/misc/asus-laptop.c
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@ -1067,19 +1067,16 @@ static void asus_backlight_exit(void)
}
#define ASUS_LED_UNREGISTER(object) \
if(object##_led.class_dev \
&& !IS_ERR(object##_led.class_dev)) \
led_classdev_unregister(&object##_led)
led_classdev_unregister(&object##_led)
static void asus_led_exit(void)
{
destroy_workqueue(led_workqueue);
ASUS_LED_UNREGISTER(mled);
ASUS_LED_UNREGISTER(tled);
ASUS_LED_UNREGISTER(pled);
ASUS_LED_UNREGISTER(rled);
ASUS_LED_UNREGISTER(gled);
destroy_workqueue(led_workqueue);
}
static void __exit asus_laptop_exit(void)
@ -1135,29 +1132,42 @@ static int asus_led_init(struct device *dev)
rv = ASUS_LED_REGISTER(mled, dev);
if (rv)
return rv;
goto out;
rv = ASUS_LED_REGISTER(tled, dev);
if (rv)
return rv;
goto out1;
rv = ASUS_LED_REGISTER(rled, dev);
if (rv)
return rv;
goto out2;
rv = ASUS_LED_REGISTER(pled, dev);
if (rv)
return rv;
goto out3;
rv = ASUS_LED_REGISTER(gled, dev);
if (rv)
return rv;
goto out4;
led_workqueue = create_singlethread_workqueue("led_workqueue");
if (!led_workqueue)
return -ENOMEM;
goto out5;
return 0;
out5:
rv = -ENOMEM;
ASUS_LED_UNREGISTER(gled);
out4:
ASUS_LED_UNREGISTER(pled);
out3:
ASUS_LED_UNREGISTER(rled);
out2:
ASUS_LED_UNREGISTER(tled);
out1:
ASUS_LED_UNREGISTER(mled);
out:
return rv;
}
static int __init asus_laptop_init(void)