From: Jan Kara <jack@suse.cz>
Date: Wed, 29 Oct 2014 21:50:44 +0000 (-0700)
Subject: lib/bitmap.c: fix undefined shift in __bitmap_shift_{left|right}()
X-Git-Tag: v3.2.65~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=de42f2725ccabce24cfd65804ad2dba1bae1f625;p=pandora-kernel.git

lib/bitmap.c: fix undefined shift in __bitmap_shift_{left|right}()

commit ea5d05b34aca25c066e0699512d0ffbd8ee6ac3e upstream.

If __bitmap_shift_left() or __bitmap_shift_right() are asked to shift by
a multiple of BITS_PER_LONG, they will try to shift a long value by
BITS_PER_LONG bits which is undefined.  Change the functions to avoid
the undefined shift.

Coverity id: 1192175
Coverity id: 1192174
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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