linux-kernel - [PATCH 4/5] regmap: Do not call regcache_exit from regcache_rbtree

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Date:	Mon, 14 Nov 2011 10:40:18 +0100
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
CC:	Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>,
	<linux-kernel@...r.kernel.org>,
	Lars-Peter Clausen <lars@...afoo.de>
Subject: [PATCH 4/5] regmap: Do not call regcache_exit from regcache_rbtree_init error path

Calling regcache_exit from regcache_rbtree_init is a layering violation and
might cause double frees. In case of an error only free those structures which
have been allocated in this function.

Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
---
 drivers/base/regmap/regcache-rbtree.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c
index e314984..e71320f 100644
--- a/drivers/base/regmap/regcache-rbtree.c
+++ b/drivers/base/regmap/regcache-rbtree.c
@@ -17,6 +17,7 @@
 
 static int regcache_rbtree_write(struct regmap *map, unsigned int reg,
 				 unsigned int value);
+static int regcache_rbtree_exit(struct regmap *map);
 
 struct regcache_rbtree_node {
 	/* the actual rbtree node holding this block */
@@ -149,7 +150,7 @@ static int regcache_rbtree_init(struct regmap *map)
 	return 0;
 
 err:
-	regcache_exit(map);
+	regcache_rbtree_exit(map);
 	return ret;
 }
 
-- 
1.7.7.1


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