From: Julia Lawall <julia@diku.dk>
Date: Sat, 20 Aug 2011 06:12:41 +0000 (+0200)
Subject: ALSA: sound/aoa/fabrics/layout.c: remove unneeded kfree
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=de75577c8c3ab733f808c65e1a9d55882efde68e;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git

ALSA: sound/aoa/fabrics/layout.c: remove unneeded kfree

The label outnodev is only used when kzalloc has not yet taken place or has
failed, so there is no need for the call for kfree under this label.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
expression E1!=0,E2,E3,E4;
statement S;
iterator I;
@@

(
if (...) { ... when != kfree(x)
               when != x = E3
               when != E3 = x
*  return ...;
 }
... when != x = E2
    when != I(...,x,...) S
if (...) { ... when != x = E4
 kfree(x); ... return ...; }
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/aoa/fabrics/layout.c b/sound/aoa/fabrics/layout.c
index 3fd1a7e24928..552b97afbca5 100644
--- a/sound/aoa/fabrics/layout.c
+++ b/sound/aoa/fabrics/layout.c
@@ -1073,10 +1073,10 @@ static int aoa_fabric_layout_probe(struct soundbus_dev *sdev)
 	sdev->pcmid = -1;
 	list_del(&ldev->list);
 	layouts_list_items--;
+	kfree(ldev);
  outnodev:
  	of_node_put(sound);
  	layout_device = NULL;
- 	kfree(ldev);
 	return -ENODEV;
 }