tree 279314a06c4f6211997b53caef834c866f957a6f
parent 5a6e7599d3f8000496068b12276492311efad5ea
author Jan Kara <jack@suse.cz> 1414619444 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1414625594 -0700

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

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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>