[PATCH] x86-64: Fix kobject_init() WARN_ON on resume from disk

Make mce_remove_device() clean up the kobject in per_cpu(device_mce, cpu)
after it has been unregistered.
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NAndi Kleen <ak@suse.de>

arch/x86_64/kernel/mce.c

@@ -652,6 +652,7 @@ static void mce_remove_device(unsigned int cpu)
 	sysdev_remove_file(&per_cpu(device_mce,cpu), &attr_tolerant);
 	sysdev_remove_file(&per_cpu(device_mce,cpu), &attr_check_interval);
 	sysdev_unregister(&per_cpu(device_mce,cpu));
+	memset(&per_cpu(device_mce, cpu).kobj, 0, sizeof(struct kobject));
 }
 
 /* Get notified when a cpu comes on/off. Be hotplug friendly. */