linux-kernel - [PATCH v2 10/12] wm8974: fix a memory leak if another WM8974 is registered

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Date:	Fri, 23 Jul 2010 05:53:52 +0000
From:	Axel Lin <axel.lin@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Barry Song <21cnbao@...il.com>,
	Kuninori Morimoto <morimoto.kuninori@...esas.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Mike Arthur <linux@...fsonmicro.com>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Liam Girdwood <lrg@...mlogic.co.uk>
Subject: [PATCH v2 10/12] wm8974: fix a memory leak if another WM8974 is registered

wm8974 is allocated in wm8974_i2c_probe() but is not freed if wm8974_register()
return -EINVAL (if another WM8974 is registered).

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 sound/soc/codecs/wm8974.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c
index a2c4b2f..1468fe1 100644
--- a/sound/soc/codecs/wm8974.c
+++ b/sound/soc/codecs/wm8974.c
@@ -670,7 +670,8 @@ static __devinit int wm8974_register(struct wm8974_priv *wm8974)
 
 	if (wm8974_codec) {
 		dev_err(codec->dev, "Another WM8974 is registered\n");
-		return -EINVAL;
+		ret = -EINVAL;
+		goto err;
 	}
 
 	mutex_init(&codec->mutex);
-- 
1.7.0.4

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