crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash
authorRomain Perier <romain.perier@free-electrons.com>
Mon, 5 Dec 2016 08:56:39 +0000 (09:56 +0100)
committerHerbert Xu <herbert@gondor.apana.org.au>
Wed, 7 Dec 2016 11:55:17 +0000 (19:55 +0800)
commit9e5f7a149e00d211177f6de8be427ebc72a1c363
tree59e300f413afc7deb48395bd86b98806d92f16b9
parent68c7f8c1c4e9b06e6b153fa3e9e0cda2ef5aaed8
crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash

mv_cesa_hash_std_step() copies the creq->state into the SRAM at each
step, but this is only required on the first one. By doing that, we
overwrite the engine state, and get erroneous results when the crypto
request is split in several chunks to fit in the internal SRAM.

This commit changes the function to copy the state only on the first
step.

Fixes: commit 2786cee8e50b ("crypto: marvell - Move SRAM I/O op...")
Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
drivers/crypto/marvell/hash.c