From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Wed, 4 Jun 2014 09:07:54 +0000 (+0200)
Subject: staging: tidspbridge: use safer test on the result of find_first_zero_bit
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~166^2~1963
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc0be81f00472d782804293766ddd9d1c2b4ebd1;p=pandora-kernel.git

staging: tidspbridge: use safer test on the result of find_first_zero_bit

Find_first_zero_bit considers BITS_PER_LONG bits at a time, and thus may
return a larger number than the maximum position argument if that position
is not a multiple of BITS_PER_LONG.

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

// <smpl>
@@
expression e1,e2,e3;
statement S1,S2;
@@

e1 = find_first_zero_bit(e2,e3)
...
if (e1
- ==
+ >=
  e3)
S1 else S2
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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