From: Martin Schwidefsky <schwidefsky@de.ibm.com>
Date: Thu, 25 Jul 2013 08:18:17 +0000 (+0200)
Subject: s390/bitops: fix find_next_bit_left
X-Git-Tag: v3.11-rc5~37^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3b0040a47ad63f7147e9e7d2febb61a3b564bb90;p=pandora-kernel.git

s390/bitops: fix find_next_bit_left

The find_next_bit_left function is broken if used with an offset which
is not a multiple of 64. The shift to mask the bits of a 64-bit word
not to search is in the wrong direction, the result can be either a
bit found smaller than the offset or failure to find a set bit.

Cc: <stable@vger.kernel.org> # v3.8+
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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