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Commit b8b4a416 authored by Richard Weinberger's avatar Richard Weinberger Committed by Herbert Xu
Browse files

padata - Register hotcpu notifier after initialization 



padata_cpu_callback() takes pinst->lock, to avoid taking
an uninitialized lock, register the notifier after it's
initialization.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
Acked-by: default avatarSteffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 9c823f9f

kernel/padata.c

+6 −6
Original line number Diff line number Diff line
@@ -1074,18 +1074,18 @@ struct padata_instance *padata_alloc(struct workqueue_struct *wq, 


	pinst->flags = 0;



#ifdef CONFIG_HOTPLUG_CPU

	pinst->cpu_notifier.notifier_call = padata_cpu_callback;

	pinst->cpu_notifier.priority = 0;

	register_hotcpu_notifier(&pinst->cpu_notifier);

#endif



	put_online_cpus();



	BLOCKING_INIT_NOTIFIER_HEAD(&pinst->cpumask_change_notifier);

	kobject_init(&pinst->kobj, &padata_attr_type);

	mutex_init(&pinst->lock);



#ifdef CONFIG_HOTPLUG_CPU

	pinst->cpu_notifier.notifier_call = padata_cpu_callback;

	pinst->cpu_notifier.priority = 0;

	register_hotcpu_notifier(&pinst->cpu_notifier);

#endif



	return pinst;



err_free_masks: