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crypto: talitos - Align SEC1 accesses to 32 bits boundaries. 

The MPC885 reference manual states:

SEC Lite-initiated 8xx writes can occur only on 32-bit-word boundaries, but
reads can occur on any byte boundary. Writing back a header read from a
non-32-bit-word boundary will yield unpredictable results.

In order to ensure that, cra_alignmask is set to 3 for SEC1.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Fixes: 9c4a79653b ("crypto: talitos - Freescale integrated security engine (SEC) driver")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Christophe Leroy 2019-05-21 13:34:18 +00:00 committed by Herbert Xu
parent eae55a586c
commit c9cca7034b
1 changed files with 4 additions and 1 deletions
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5
drivers/crypto/talitos.c
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@ -3327,7 +3327,10 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev,
alg->cra_priority = t_alg->algt.priority;
else
alg->cra_priority = TALITOS_CRA_PRIORITY;
alg->cra_alignmask = 0;
if (has_ftr_sec1(priv))
alg->cra_alignmask = 3;
else
alg->cra_alignmask = 0;
alg->cra_ctxsize = sizeof(struct talitos_ctx);
alg->cra_flags |= CRYPTO_ALG_KERN_DRIVER_ONLY;