From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Thu, 2 Feb 2012 15:52:54 +0000 (-0800)
Subject: PTR_ERR should be called before its argument is cleared.
X-Git-Tag: v3.4-rc1~194^2^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3c1b1ce00d2702d6be9b92233822e560f37ea780;p=pandora-kernel.git

PTR_ERR should be called before its argument is cleared.

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

// <smpl>
@@
expression e,e1;
constant c;
@@

*e = c
... when != e = e1
    when != &e
    when != true IS_ERR(e)
*PTR_ERR(e)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reported-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---

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