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x86/hwmon: fix module init for hotplug-but-no-device-found case 

In commit 0dca94baea the call to
platform_driver_unregister() was made conditional upon !HOTPLUG_CPU,
but the return value from coretemp_init() was left to indicate an
error. This isn't correct, as the negative return value indicates to
the module loader that initialization failed, which isn't intended
here and results in dangling pointers.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
This commit is contained in:
Jan Beulich 2010-09-13 10:05:51 +00:00 committed by Guenter Roeck
parent f7c77a3dc4
commit 89a3fd35ba
1 changed files with 4 additions and 1 deletions
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5
drivers/hwmon/coretemp.c
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@ -541,16 +541,19 @@ static int __init coretemp_init(void)
" has no thermal sensor.\n", c->x86_model);
}
}
#ifndef CONFIG_HOTPLUG_CPU
if (list_empty(&pdev_list)) {
err = -ENODEV;
goto exit_driver_unreg;
}
#endif
register_hotcpu_notifier(&coretemp_cpu_notifier);
return 0;
exit_driver_unreg:
#ifndef CONFIG_HOTPLUG_CPU
exit_driver_unreg:
platform_driver_unregister(&coretemp_driver);
#endif
exit: