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(parent: 5947122) | patch
s390/bitops: fix find_next_bit_left
authorMartin Schwidefsky <schwidefsky@de.ibm.com>
Thu, 25 Jul 2013 08:18:17 +0000 (10:18 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Fri, 26 Jul 2013 11:25:21 +0000 (13:25 +0200)
commit3b0040a47ad63f7147e9e7d2febb61a3b564bb90
treeb22f1711618c557b41a5d37b139f0cfe532ad67ctree | snapshot
parent594712276e737961d30e11eae80d403b2b3815dfcommit | diff
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>
arch/s390/include/asm/bitops.h diff | blob | history
Domain: System / Kernel;