linux-kernel - [PATCH 07/10] of: Make sure attached nodes don't carry along extra children

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Date:	Wed, 23 Jul 2014 17:44:21 -0600
From:	Grant Likely <grant.likely@...aro.org>
To:	linux-kernel@...r.kernel.org,
	Nathan Fontenot <nfont@...tin.ibm.com>,
	Tyrel Datwyler <turtle.in.the.kernel@...il.com>,
	Pantelis Antoniou <pantelis.antoniou@...sulko.com>,
	devicetree@...r.kernel.org
Cc:	Grant Likely <grant.likely@...aro.org>
Subject: [PATCH 07/10] 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@...aro.org>
---
 drivers/of/dynamic.c | 1 +
 1 file changed, 1 insertion(+)

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;
-- 
1.9.1

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