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Fri, 15 Nov 2019 13:49:09 +0000 From: To: CC: , , , , , , Subject: [PATCH 2/2] crypto: atmel-aes - Change data type for "lastc" buffer Thread-Topic: [PATCH 2/2] crypto: atmel-aes - Change data type for "lastc" buffer Thread-Index: AQHVm7t0zw6ysqDDnEebCGYj6j6T6A== Date: Fri, 15 Nov 2019 13:49:09 +0000 Message-ID: <20191115134854.30190-2-tudor.ambarus@microchip.com> References: <20191115134854.30190-1-tudor.ambarus@microchip.com> In-Reply-To: <20191115134854.30190-1-tudor.ambarus@microchip.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: BE0P281CA0017.DEUP281.PROD.OUTLOOK.COM (2603:10a6:b10:a::27) To MN2PR11MB4448.namprd11.prod.outlook.com (2603:10b6:208:193::29) x-ms-exchange-messagesentrepresentingtype: 1 x-mailer: git-send-email 2.9.5 x-originating-ip: [94.177.32.156] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 1c4c1684-9de8-4fe7-86bd-08d769d29697 x-ms-traffictypediagnostic: MN2PR11MB4159: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:5516; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 1c4c1684-9de8-4fe7-86bd-08d769d29697 X-MS-Exchange-CrossTenant-originalarrivaltime: 15 Nov 2019 13:49:09.0303 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: +AyJot5sSHg63/aroi/4RPt8cmpxEjz+5HmILDSVwrFLS5b7meUsWxNTgGs+iB8ZCaF3gZSue3zTb1GLB+sMaPWXBL5xZIIe9RkXWflPP/A= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR11MB4159 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Tudor Ambarus In case of in-place decryption, the "lastc" buffer is used to copy the last ciphertext block before the decryption of the message. It is later used to update the req->iv of the skcipher_request. "lastc" variable is not used to interact with the hardware, there is no restriction to be of type "u32". Change the type of "lastc" to "u8". Signed-off-by: Tudor Ambarus --- drivers/crypto/atmel-aes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c index 3c88c164c3dc..91092504bc96 100644 --- a/drivers/crypto/atmel-aes.c +++ b/drivers/crypto/atmel-aes.c @@ -155,7 +155,7 @@ struct atmel_aes_authenc_ctx { =20 struct atmel_aes_reqctx { unsigned long mode; - u32 lastc[AES_BLOCK_SIZE / sizeof(u32)]; + u8 lastc[AES_BLOCK_SIZE]; }; =20 #if IS_ENABLED(CONFIG_CRYPTO_DEV_ATMEL_AUTHENC) --=20 2.9.5