linux-kernel - [PATCH 2/5] regmap: Fix memory leak in regcache_hw

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Date:	Mon, 14 Nov 2011 10:40:16 +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 2/5] regmap: Fix memory leak in regcache_hw_init error path

Make sure reg_defaults_raw gets freed in case of an error.

Signed-off-by: Lars-Peter Clausen <lars@...afoo.de>
---
 drivers/base/regmap/regcache.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 6ab9f03..7944626 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -61,8 +61,10 @@ static int regcache_hw_init(struct regmap *map)
 
 	map->reg_defaults = kmalloc(count * sizeof(struct reg_default),
 				      GFP_KERNEL);
-	if (!map->reg_defaults)
-		return -ENOMEM;
+	if (!map->reg_defaults) {
+		ret = -ENOMEM;
+		goto err_free;
+	}
 
 	/* fill the reg_defaults */
 	map->num_reg_defaults = count;
@@ -77,6 +79,12 @@ static int regcache_hw_init(struct regmap *map)
 	}
 
 	return 0;
+
+err_free:
+	if (map->cache_free)
+		kfree(map->reg_defaults_raw);
+
+	return ret;
 }
 
 int regcache_init(struct regmap *map)
-- 
1.7.7.1


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