linux-kernel - [PATCH 4.8 20/33] crypto: marvell - Dont copy hash operation twice into the SRAM

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Message-Id: <20161213171535.243552533@linuxfoundation.org>
Date:   Tue, 13 Dec 2016 09:16:21 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Romain Perier <romain.perier@...e-electrons.com>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 4.8 20/33] crypto: marvell - Dont copy hash operation twice into the SRAM

4.8-stable review patch.  If anyone has any objections, please let me know.

------------------

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

commit 68c7f8c1c4e9b06e6b153fa3e9e0cda2ef5aaed8 upstream.

No need to copy the template of an hash operation twice into the SRAM
from the step function.

Fixes: commit 85030c5168f1 ("crypto: marvell - Add support for chai...")
Signed-off-by: Romain Perier <romain.perier@...e-electrons.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/crypto/marvell/hash.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/crypto/marvell/hash.c
+++ b/drivers/crypto/marvell/hash.c
@@ -172,9 +172,6 @@ static void mv_cesa_ahash_std_step(struc
 	for (i = 0; i < digsize / 4; i++)
 		writel_relaxed(creq->state[i], engine->regs + CESA_IVDIG(i));
 
-	mv_cesa_adjust_op(engine, &creq->op_tmpl);
-	memcpy_toio(engine->sram, &creq->op_tmpl, sizeof(creq->op_tmpl));
-
 	if (creq->cache_ptr)
 		memcpy_toio(engine->sram + CESA_SA_DATA_SRAM_OFFSET,
 			    creq->cache, creq->cache_ptr);