From: Richard Weinberger <richard@nod.at>
Date: Fri, 23 Aug 2013 11:12:33 +0000 (+0200)
Subject: padata - Register hotcpu notifier after initialization
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b8b4a4166e3401b7d8ea9deb8d64d875a468144c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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: Richard Weinberger <richard@nod.at>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/kernel/padata.c b/kernel/padata.c
index 2f0037a86289..07af2c95dcfe 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -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: