[PATCH] crypto: powerpc - Fix initialisation of crc32c context

[Herbert Xu]

Daniel Axtens <dja at axtens.net> wrote:
> 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 at samba.org>
> Cc: stable at vger.kernel.org
> Signed-off-by: Daniel Axtens <dja at axtens.net>

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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