Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030213AbbLQQv3 (ORCPT ); Thu, 17 Dec 2015 11:51:29 -0500 Received: from eusmtp01.atmel.com ([212.144.249.242]:56698 "EHLO eusmtp01.atmel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756030AbbLQQv0 (ORCPT ); Thu, 17 Dec 2015 11:51:26 -0500 From: Cyrille Pitchen To: , , CC: , , , Cyrille Pitchen Subject: [PATCH 09/24] crypto: atmel-aes: remove useless write in the Control Register Date: Thu, 17 Dec 2015 17:48:40 +0100 Message-ID: <1ace62ded06cbf4992e92aa3c3453b01054f56f4.1450366831.git.cyrille.pitchen@atmel.com> X-Mailer: git-send-email 1.8.2.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1285 Lines: 37 As claimed by the datasheet, writing 0 into the Control Register has no effet. So we remove this useless register access. Signed-off-by: Cyrille Pitchen --- drivers/crypto/atmel-aes.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c index 48407a7f6f61..f1ea9c893561 100644 --- a/drivers/crypto/atmel-aes.c +++ b/drivers/crypto/atmel-aes.c @@ -511,7 +511,7 @@ static int atmel_aes_crypt_dma_start(struct atmel_aes_dev *dd) static void atmel_aes_write_ctrl(struct atmel_aes_dev *dd, bool use_dma, const u32 *iv) { - u32 valcr = 0, valmr = 0; + u32 valmr = 0; /* MR register must be set before IV registers */ if (dd->ctx->keylen == AES_KEYSIZE_128) @@ -554,7 +554,6 @@ static void atmel_aes_write_ctrl(struct atmel_aes_dev *dd, bool use_dma, valmr |= AES_MR_SMOD_AUTO; } - atmel_aes_write(dd, AES_CR, valcr); atmel_aes_write(dd, AES_MR, valmr); atmel_aes_write_n(dd, AES_KEYWR(0), dd->ctx->key, -- 1.8.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/