From patchwork Tue Jul 7 18:58:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 11649787 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C2B2313B6 for ; Tue, 7 Jul 2020 18:59:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1FFC207BB for ; Tue, 7 Jul 2020 18:59:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594148382; bh=EFAUE/O3NAFgFk16uIpubIyUQAmR64ga9v6sCy4aUV8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=IhsDRqPGmSWktxgLF9ly/a5MCKLgd+j1upX5S2HanWhluaCLe2S7mEoWq+cLrvYzj 3TqsMawYMY65SQeBlojDHnwIWzAPW7jc5VhLr5txj1ET7XuucXmJej+G1HqPE5IHh2 HPxDSgnW8pluYSG8mxC2cdpQA8FzXKpin/wJXNdI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728672AbgGGS7l (ORCPT ); Tue, 7 Jul 2020 14:59:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:36250 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728284AbgGGS7j (ORCPT ); Tue, 7 Jul 2020 14:59:39 -0400 Received: from sol.hsd1.ca.comcast.net (c-107-3-166-239.hsd1.ca.comcast.net [107.3.166.239]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C9EE7206CD; Tue, 7 Jul 2020 18:59:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594148379; bh=EFAUE/O3NAFgFk16uIpubIyUQAmR64ga9v6sCy4aUV8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=c9732zf5gH9kNy/qOxs8iTYY7nqaMEDN+LqFtnIDsK66oKlYDc0huOBgQasFTmiX9 6RR5REwpmJGjyz9yhxRabbDu0oEpD2PYmoa1biV75kcYGkeew5KY5746nv3IJ4jw54 vIInYsdRydl1osvc5z62Y0mYRv2uh1UeQWXsQpOo= From: Eric Biggers To: linux-crypto@vger.kernel.org, Herbert Xu Cc: alsa-devel@alsa-project.org, Ard Biesheuvel , Cheng-Yi Chiang , Enric Balletbo i Serra , Guenter Roeck , Tzung-Bi Shih Subject: [PATCH 4/4] ASoC: cros_ec_codec: use sha256() instead of open coding Date: Tue, 7 Jul 2020 11:58:18 -0700 Message-Id: <20200707185818.80177-5-ebiggers@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200707185818.80177-1-ebiggers@kernel.org> References: <20200707185818.80177-1-ebiggers@kernel.org> MIME-Version: 1.0 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Eric Biggers Now that there's a function that calculates the SHA-256 digest of a buffer in one step, use it instead of sha256_init() + sha256_update() + sha256_final(). Also simplify the code by inlining calculate_sha256() into its caller and switching a debug log statement to use %*phN instead of bin2hex(). Cc: alsa-devel@alsa-project.org Cc: Ard Biesheuvel Cc: Cheng-Yi Chiang Cc: Enric Balletbo i Serra Cc: Guenter Roeck Cc: Tzung-Bi Shih Signed-off-by: Eric Biggers Acked-by: Tzung-Bi Shih --- sound/soc/codecs/cros_ec_codec.c | 27 ++------------------------- 1 file changed, 2 insertions(+), 25 deletions(-) diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index 8d45c628e988..ab009c7dfdf4 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -103,28 +103,6 @@ static int send_ec_host_command(struct cros_ec_device *ec_dev, uint32_t cmd, return ret; } -static int calculate_sha256(struct cros_ec_codec_priv *priv, - uint8_t *buf, uint32_t size, uint8_t *digest) -{ - struct sha256_state sctx; - - sha256_init(&sctx); - sha256_update(&sctx, buf, size); - sha256_final(&sctx, digest); - -#ifdef DEBUG - { - char digest_str[65]; - - bin2hex(digest_str, digest, 32); - digest_str[64] = 0; - dev_dbg(priv->dev, "hash=%s\n", digest_str); - } -#endif - - return 0; -} - static int dmic_get_gain(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { @@ -782,9 +760,8 @@ static int wov_hotword_model_put(struct snd_kcontrol *kcontrol, if (IS_ERR(buf)) return PTR_ERR(buf); - ret = calculate_sha256(priv, buf, size, digest); - if (ret) - goto leave; + sha256(buf, size, digest); + dev_dbg(priv->dev, "hash=%*phN\n", SHA256_DIGEST_SIZE, digest); p.cmd = EC_CODEC_WOV_GET_LANG; ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,