From: Grant Likely <grant.likely@linaro.org>
Date: Wed, 16 Jul 2014 14:48:46 +0000 (-0600)
Subject: of: Make sure attached nodes don't carry along extra children
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6162dbe49a451f96431a23b4821f05e3bd925bc1;p=linux-beck.git

of: Make sure attached nodes don't carry along extra children

The child pointer does not get cleared when attaching new nodes which
could cause the tree to be inconsistent. Clear the child pointer in
__of_attach_node() to be absolutely sure that the structure remains in a
consistent layout.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
---

diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c
index c875787fa394..b96d83100987 100644
--- a/drivers/of/dynamic.c
+++ b/drivers/of/dynamic.c
@@ -98,6 +98,7 @@ int of_property_notify(int action, struct device_node *np,
 
 void __of_attach_node(struct device_node *np)
 {
+	np->child = NULL;
 	np->sibling = np->parent->child;
 	np->allnext = np->parent->allnext;
 	np->parent->allnext = np;