From: Julia Lawall <julia@diku.dk>
Date: Fri, 4 Jun 2010 23:17:37 +0000 (-0700)
Subject: arch/sparc/kernel: Eliminate what looks like a NULL pointer dereference
X-Git-Tag: v2.6.35-rc6~10^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0d0659c78d7ea29ad6c3c538dcaae0227f31b9d2;p=pandora-kernel.git

arch/sparc/kernel: Eliminate what looks like a NULL pointer dereference

At the point of the test, action cannot be NULL, as it has been dereferenced
in the code just above.

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

// <smpl>
@r exists@
expression E,E1;
identifier f;
statement S1,S2,S3;
@@

if ((E == NULL && ...) || ...)
{
  ... when != if (...) S1 else S2
      when != E = E1
* E->f
  ... when any
}
else S3
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed