[PATCH 3/3] sound/soc/soc-core.c: drop kfree of devm_kzalloc's data

From: Julia Lawall
Date: Sat Aug 04 2012 - 08:01:33 EST


From: Julia Lawall <Julia.Lawall@xxxxxxx>

Using kfree to free data allocated with devm_kzalloc causes double frees.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x;
@@

x = devm_kzalloc(...)
...
?-kfree(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>

---
The kfrees were introduced in b761c0ca.

sound/soc/soc-core.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index f81c597..86d7a36 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -4136,7 +4136,6 @@ int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
dev_err(card->dev,
"Property '%s' index %d could not be read: %d\n",
propname, 2 * i, ret);
- kfree(routes);
return -EINVAL;
}
ret = of_property_read_string_index(np, propname,
@@ -4145,7 +4144,6 @@ int snd_soc_of_parse_audio_routing(struct snd_soc_card *card,
dev_err(card->dev,
"Property '%s' index %d could not be read: %d\n",
propname, (2 * i) + 1, ret);
- kfree(routes);
return -EINVAL;
}
}

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