linux-kernel - [ 23/26] of/base: release the node correctly in of_parse_phandle_with

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Message-Id: <20130701200732.480333896@linuxfoundation.org>
Date:	Mon,  1 Jul 2013 13:10:18 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Tang Yuantian <Yuantian.Tang@...escale.com>,
	Grant Likely <grant.likely@...aro.org>,
	Guenter Roeck <linux@...ck-us.net>
Subject: [ 23/26] of/base: release the node correctly in of_parse_phandle_with_args()

3.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Tang Yuantian <yuantian.tang@...escale.com>

commit b855f16b05a697ac1863adabe99bfba56e6d3199 upstream.

Call of_node_put() only when the out_args is NULL on success,
or the node's reference count will not be correct because the caller
will call of_node_put() again.

Signed-off-by: Tang Yuantian <Yuantian.Tang@...escale.com>
[grant.likely: tightened up the patch]
Signed-off-by: Grant Likely <grant.likely@...aro.org>
Cc: Guenter Roeck <linux@...ck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/of/base.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1166,11 +1166,11 @@ static int __of_parse_phandle_with_args(
 				out_args->args_count = count;
 				for (i = 0; i < count; i++)
 					out_args->args[i] = be32_to_cpup(list++);
+			} else {
+				of_node_put(node);
 			}
 
 			/* Found it! return success */
-			if (node)
-				of_node_put(node);
 			return 0;
 		}
 


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