From: Julien Brunel <brunel@diku.dk>
Date: Wed, 24 Sep 2008 21:22:22 +0000 (-0500)
Subject: 9p: use an IS_ERR test rather than a NULL test
X-Git-Tag: v2.6.27-rc8~25^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62aa528e0299ffef8e138d9d92d13e631d06c5ff;p=pandora-kernel.git

9p: use an IS_ERR test rather than a NULL test

In case of error, the function p9_client_walk returns an ERR pointer, but
never returns a NULL pointer.  So a NULL test that comes after an IS_ERR
test should be deleted.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@match_bad_null_test@
expression x, E;
statement S1,S2;
@@
x = p9_client_walk(...)
... when != x = E
*  if (x != NULL)
S1 else S2
// </smpl>

Signed-off-by: Julien Brunel <brunel@diku.dk>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

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