releases/4.8.6/crypto-marvell-don-t-overwrite-default-creq-state-during-initialization.patch

From 57cfda1ac74e58767f6305bd1ea3449177425460 Mon Sep 17 00:00:00 2001
From: Romain Perier <romain.perier@free-electrons.com>
Date: Tue, 9 Aug 2016 11:03:19 +0200
Subject: crypto: marvell - Don't overwrite default creq->state during initialization

From: Romain Perier <romain.perier@free-electrons.com>

commit 57cfda1ac74e58767f6305bd1ea3449177425460 upstream.

Currently, in mv_cesa_{md5,sha1,sha256}_init creq->state is initialized
before the call to mv_cesa_ahash_init. This is wrong because this
function fills creq with zero by using memset, so its 'state' that
contains the default DIGEST is overwritten. This commit fixes the issue
by initializing creq->state just after the call to mv_cesa_ahash_init.

Fixes: commit b0ef51067cb4 ("crypto: marvell/cesa - initialize hash...")
Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/crypto/marvell/hash.c |   15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

--- a/drivers/crypto/marvell/hash.c
+++ b/drivers/crypto/marvell/hash.c
@@ -805,13 +805,14 @@ static int mv_cesa_md5_init(struct ahash
 	struct mv_cesa_op_ctx tmpl = { };
 
 	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_MD5);
+
+	mv_cesa_ahash_init(req, &tmpl, true);
+
 	creq->state[0] = MD5_H0;
 	creq->state[1] = MD5_H1;
 	creq->state[2] = MD5_H2;
 	creq->state[3] = MD5_H3;
 
-	mv_cesa_ahash_init(req, &tmpl, true);
-
 	return 0;
 }
 
@@ -873,14 +874,15 @@ static int mv_cesa_sha1_init(struct ahas
 	struct mv_cesa_op_ctx tmpl = { };
 
 	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA1);
+
+	mv_cesa_ahash_init(req, &tmpl, false);
+
 	creq->state[0] = SHA1_H0;
 	creq->state[1] = SHA1_H1;
 	creq->state[2] = SHA1_H2;
 	creq->state[3] = SHA1_H3;
 	creq->state[4] = SHA1_H4;
 
-	mv_cesa_ahash_init(req, &tmpl, false);
-
 	return 0;
 }
 
@@ -942,6 +944,9 @@ static int mv_cesa_sha256_init(struct ah
 	struct mv_cesa_op_ctx tmpl = { };
 
 	mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA256);
+
+	mv_cesa_ahash_init(req, &tmpl, false);
+
 	creq->state[0] = SHA256_H0;
 	creq->state[1] = SHA256_H1;
 	creq->state[2] = SHA256_H2;
@@ -951,8 +956,6 @@ static int mv_cesa_sha256_init(struct ah
 	creq->state[6] = SHA256_H6;
 	creq->state[7] = SHA256_H7;
 
-	mv_cesa_ahash_init(req, &tmpl, false);
-
 	return 0;
 }