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authorDaniel Axtens <dja@axtens.net>2017-03-03 17:56:55 +1100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-03-22 12:43:40 +0100
commitecdc5b12d7a01707b5b3f334cdf47f01e50d2ce3 (patch)
tree1bf5c9762d9a050d261dddfa14a78f6d0ed5ddc5 /crypto
parentc40609652267440ae6f800303ea1f3be17d357e2 (diff)
crypto: powerpc - Fix initialisation of crc32c context
commit aa2be9b3d6d2d699e9ca7cbfc00867c80e5da213 upstream. Turning on crypto self-tests on a POWER8 shows: alg: hash: Test 1 failed for crc32c-vpmsum 00000000: ff ff ff ff Comparing the code with the Intel CRC32c implementation on which ours is based shows that we are doing an init with 0, not ~0 as CRC32c requires. This probably wasn't caught because btrfs does its own weird open-coded initialisation. Initialise our internal context to ~0 on init. This makes the self-tests pass, and btrfs continues to work. Fixes: 6dd7a82cc54e ("crypto: powerpc - Add POWER8 optimised crc32c") Cc: Anton Blanchard <anton@samba.org> Signed-off-by: Daniel Axtens <dja@axtens.net> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto')
0 files changed, 0 insertions, 0 deletions