From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E4A8C433F5 for ; Wed, 26 Jan 2022 21:05:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231827AbiAZVFI (ORCPT ); Wed, 26 Jan 2022 16:05:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231585AbiAZVEy (ORCPT ); Wed, 26 Jan 2022 16:04:54 -0500 Received: from mail-wm1-x336.google.com (mail-wm1-x336.google.com [IPv6:2a00:1450:4864:20::336]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5F95C061747 for ; Wed, 26 Jan 2022 13:04:53 -0800 (PST) Received: by mail-wm1-x336.google.com with SMTP id r126so556033wma.0 for ; Wed, 26 Jan 2022 13:04:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UxtlnkkXzgY9MYBwxijbABK2S3Zir1EPcNhEeIERW3k=; b=uVMO09/XOuXmt4x6PARdjy4vvpLXI1ZXFgAAaumTVy2NmU1V9Si3lx4byYIB3x7chj 08qFPwH2UMUkXhDW5u4nBlrpLnp9pJ5dKEJRvTCu5PlK24n+cqMnrU1o2WPb+NzFb3Vl sGcbk/v5Z3EN1mJu2s8+S0gzCNlEQNLja4JS9JsNNN6W+KCkLOPDnOl8dLK9HRLp5HJq IEIX7k6TCn8B/7LseEBCNhhkj9RLE5ZhE5GJOmvu5iBtjGO6ObKMmENvmsLW3Q5c0lZb 3l24cLpAD2OWv0E3s/wj9x85O/+hfBZdd7q9//l/qodAgHe2kl7Exi/VFCBjTsTVx9tx Es+g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UxtlnkkXzgY9MYBwxijbABK2S3Zir1EPcNhEeIERW3k=; b=gkLDTZI9pmY25+t8u219sPbji4Q15gR1985etLT8bSiJ01EgmAF0SUpl5Zb5THA3Gn 5BiY4oBSam5iPcYUEkvfJAtisZFPowqg8BwmcDTD3KTivk71J0JIbGu4Xjczv80xq4Gb tyq7SW+a/8Iyc4xynaYawXuLUod4Y5w0n4/HccmFrNp4AkUy1tmPsGDsgctetwQMQB9E vxOKGrsCrdNsnQhd9PGh22ntvNwoLF7JOHgYjbbRMMYNBZDnDP5MMEGjYXsMT968zhjY /UFh+Lho69vBDBAgujrmKnOZFh2wq7p8uJ+ZGgRKAxFUMaMcJsuaIXWFhotGTd+f7pWI i6WA== X-Gm-Message-State: AOAM530CcilVha6HvKETzKfjSIjsCPIAYYBTIR4jifQpwUBQdQCeCp4e T3UfG06SQjhjEKWB5t85m+lefA== X-Google-Smtp-Source: ABdhPJyp6AGL1pT2Yn3YZ1lp/S6Ybp9E/UyigNbrZETxbAsiW7nMj83b0b2T42c9NT/o4PKPzyokVw== X-Received: by 2002:a05:600c:35c5:: with SMTP id r5mr435934wmq.195.1643231092344; Wed, 26 Jan 2022 13:04:52 -0800 (PST) Received: from localhost.localdomain (laubervilliers-658-1-213-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.googlemail.com with ESMTPSA id j19sm4948611wmq.17.2022.01.26.13.04.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Jan 2022 13:04:51 -0800 (PST) From: Corentin Labbe To: davem@davemloft.net, herbert@gondor.apana.org.au, jernej.skrabec@gmail.com, mripard@kernel.org, wens@csie.org Cc: linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-sunxi@googlegroups.com, Corentin Labbe Subject: [PATCH 3/8] crypto: sun8i-ss: handle zero sized sg Date: Wed, 26 Jan 2022 21:04:36 +0000 Message-Id: <20220126210441.3661782-4-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220126210441.3661782-1-clabbe@baylibre.com> References: <20220126210441.3661782-1-clabbe@baylibre.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org sun8i-ss does not handle well the possible zero sized sg. Fixes: d9b45418a917 ("crypto: sun8i-ss - support hash algorithms") Signed-off-by: Corentin Labbe --- drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c index 3c073eb3db03..2557bb3fe7aa 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c @@ -379,13 +379,21 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq) } len = areq->nbytes; - for_each_sg(areq->src, sg, nr_sgs, i) { + sg = areq->src; + i = 0; + while (len > 0 && sg) { + if (sg_dma_len(sg) == 0) { + sg = sg_next(sg); + continue; + } rctx->t_src[i].addr = sg_dma_address(sg); todo = min(len, sg_dma_len(sg)); rctx->t_src[i].len = todo / 4; len -= todo; rctx->t_dst[i].addr = addr_res; rctx->t_dst[i].len = digestsize / 4; + sg = sg_next(sg); + i++; } if (len > 0) { dev_err(ss->dev, "remaining len %d\n", len); -- 2.34.1