crypto: nx - Use RCU_INIT_POINTER(x, NULL)

This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
yujue86 · Apr 16, 2014 · 7ded6e3 · 7ded6e3
1 parent 0ea4814
commit 7ded6e3
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/crypto/nx/nx-842.c b/drivers/crypto/nx/nx-842.c
@@ -1234,7 +1234,7 @@ static int __exit nx842_remove(struct vio_dev *viodev)
 	old_devdata = rcu_dereference_check(devdata,
 			lockdep_is_held(&devdata_mutex));
 	of_reconfig_notifier_unregister(&nx842_of_nb);
-	rcu_assign_pointer(devdata, NULL);
+	RCU_INIT_POINTER(devdata, NULL);
 	spin_unlock_irqrestore(&devdata_mutex, flags);
 	synchronize_rcu();
 	dev_set_drvdata(&viodev->dev, NULL);
@@ -1285,7 +1285,7 @@ static void __exit nx842_exit(void)
 	spin_lock_irqsave(&devdata_mutex, flags);
 	old_devdata = rcu_dereference_check(devdata,
 			lockdep_is_held(&devdata_mutex));
-	rcu_assign_pointer(devdata, NULL);
+	RCU_INIT_POINTER(devdata, NULL);
 	spin_unlock_irqrestore(&devdata_mutex, flags);
 	synchronize_rcu();
 	if (old_devdata)