[PATCH v1 11/15] crypto: talitos - Align SEC1 accesses to 32 bits boundaries.

[Christophe Leroy]

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@xxxxxx>
Fixes: 9c4a79653b35 ("crypto: talitos - Freescale integrated security engine (SEC) driver")
---
 drivers/crypto/talitos.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 7c8a3a717b91..750b0159e654 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -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;
 
-- 
2.13.3