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authorAxel Lin <axel.lin@gmail.com>2010-07-23 05:53:53 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-08-03 07:46:27 +0100
commitd484366beeab0cded9644083172151c5afacc503 (patch)
treea560757325c9c842e12c4f87b25e759b1997a341
parent4eaac50552395f693b8c428872e8b5311c3dab60 (diff)
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ASoC: wm8978: fix a memory leak if a wm8978_register fail
There is a memory leak found if wm8978_register() fail. This patch moves the buffer allocate and release at the same level to prevent the memory leak. Signed-off-by: Axel Lin <axel.lin@gmail.com> Reviewed-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
-rw-r--r--sound/soc/codecs/wm8978.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm8978.c b/sound/soc/codecs/wm8978.c
index 51d5f433215..8a1ad778e7e 100644
--- a/sound/soc/codecs/wm8978.c
+++ b/sound/soc/codecs/wm8978.c
@@ -1076,7 +1076,6 @@ static __devinit int wm8978_register(struct wm8978_priv *wm8978)
err_codec:
snd_soc_unregister_codec(codec);
err:
- kfree(wm8978);
return ret;
}
@@ -1085,13 +1084,13 @@ static __devexit void wm8978_unregister(struct wm8978_priv *wm8978)
wm8978_set_bias_level(&wm8978->codec, SND_SOC_BIAS_OFF);
snd_soc_unregister_dai(&wm8978_dai);
snd_soc_unregister_codec(&wm8978->codec);
- kfree(wm8978);
wm8978_codec = NULL;
}
static __devinit int wm8978_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
+ int ret;
struct wm8978_priv *wm8978;
struct snd_soc_codec *codec;
@@ -1107,13 +1106,18 @@ static __devinit int wm8978_i2c_probe(struct i2c_client *i2c,
codec->dev = &i2c->dev;
- return wm8978_register(wm8978);
+ ret = wm8978_register(wm8978);
+ if (ret < 0)
+ kfree(wm8978);
+
+ return ret;
}
static __devexit int wm8978_i2c_remove(struct i2c_client *client)
{
struct wm8978_priv *wm8978 = i2c_get_clientdata(client);
wm8978_unregister(wm8978);
+ kfree(wm8978);
return 0;
}