From: Julia Lawall <julia@diku.dk>
Date: Wed, 2 Feb 2011 17:13:36 +0000 (+0100)
Subject: mtd: ts5500_flash: avoid calling map_destroy on NULL
X-Git-Tag: v2.6.39-rc1~40^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ee7451a023dd197fcfc1ba46dcce6d8ec5e1b78;p=pandora-kernel.git

mtd: ts5500_flash: avoid calling map_destroy on NULL

map_destroy dereferences its argument.  The call is furthermore only
reachable when this argument is NULL.  Thus the call is dropped.

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

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

*if (x == NULL)
{ ...
* map_destroy(x);
  ...
  return ...;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

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