commit 3c1b1ce00d2702d6be9b92233822e560f37ea780
author Julia Lawall <Julia.Lawall@lip6.fr> Thu Feb 02 07:52:54 2012 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> Tue Feb 21 09:06:10 2012 -0800
tree 302e888faea366f7caccd6ad946bdde6d8e9137e
parent bde23c6892878e48f64de668660778991bc2fb56

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>