From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 984C34AA7 for ; Thu, 17 Mar 2022 20:56:16 +0000 (UTC) Received: by mail-wm1-f43.google.com with SMTP id p184-20020a1c29c1000000b0037f76d8b484so3794909wmp.5 for ; Thu, 17 Mar 2022 13:56:16 -0700 (PDT) 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=mu9PNXccAJdhVTexskBbnqVFS7DSWYIvwlxUPxT8X/M=; b=20FqSq7+Gz98jUhIdLLoZKY4NQ4nwWdB2FhOdxY4KWxv2Oty4wuU1LzfpgHH32VYrP fwhyeMoyXMGQO10ha//eGEFRjCo00OKekoJn2xTX/Omr3n3HhhztcKsVxQTZOxLVj1mN BhwAFc5mTOvNF3gN2VqrSDZ3qKycRhHyS6Ov1k/ibiwsd6anmqbbpVaEf/mwaK+o3EyA qZE1eCTa1NXz8YZDDGTVaay6NewAnXN3sCRd65ij1xwFV5QlSyCdn5BzHBhWymaEq6DQ HO3ZnSH+Kyi5f36IETcEB7sMOHdnMYriahS65OsRs5XEdRALC8faNwXPi6r/E9eXMQ8o xUJw== 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=mu9PNXccAJdhVTexskBbnqVFS7DSWYIvwlxUPxT8X/M=; b=e+Iq4QNQv5GupnJPPhhkkQbOhWKxV8fcPtbHfVp5Kwbusyy5jkTqu8ndUBtMeDqOXq EVziXBV/XvPOgIkJoNBmxr/sHrMOEmH46z4JMOYWOGLqJoPziLPBQ5GU6o+6X8S3OgFk 78G+n37M/9YTbis6rCJA4mh9td9zR7c9keMS2+1kIJHUF6O3w4FvuMW2HL4EIPwRF6Fd oIoBFoGvm7Gz6I1NeaYP/ue3+s5/vImjVQVqnERab8TRDxXMYVUemfjzBMG5MmaI8yiS AsKSB97YnzzkRmAfsxxX8R17H6ozKROgEaW8kOFI1lbhMwDx9s+00CYUx/9dBaQDLc53 SnlQ== X-Gm-Message-State: AOAM533D3I7PsvKVf3orWVgYPf5JlAxYyKigRWlc+VG93HFavtpoDORn i4p9aQoN0y+3nqtan9gsZD+Thg== X-Google-Smtp-Source: ABdhPJwPCZcP/c7dsS44hNuURWEY5qBz3XyOo6LK/OCQ/ZdXbIYkZNYma1Wjm/vCLxwccdX1oQGzCg== X-Received: by 2002:a05:600c:651:b0:381:3d7b:40e0 with SMTP id p17-20020a05600c065100b003813d7b40e0mr13220460wmm.17.1647550575007; Thu, 17 Mar 2022 13:56:15 -0700 (PDT) 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 r4-20020a05600c35c400b00389f368cf1esm3695424wmq.40.2022.03.17.13.56.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Mar 2022 13:56:14 -0700 (PDT) From: Corentin Labbe To: herbert@gondor.apana.org.au, jernej.skrabec@gmail.com, samuel@sholland.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, Corentin Labbe Subject: [PATCH 05/19] crypto: sun8i-ss: handle zero sized sg Date: Thu, 17 Mar 2022 20:55:51 +0000 Message-Id: <20220317205605.3924836-6-clabbe@baylibre.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220317205605.3924836-1-clabbe@baylibre.com> References: <20220317205605.3924836-1-clabbe@baylibre.com> Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 1a71ed49d233..ca4f280af35d 100644 --- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c +++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c @@ -380,13 +380,21 @@ 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