From patchwork Mon May 29 20:27:30 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoine Tenart X-Patchwork-Id: 9753643 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6512C6038E for ; Mon, 29 May 2017 20:29:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 612B51FF27 for ; Mon, 29 May 2017 20:29:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 547FA1FFCA; Mon, 29 May 2017 20:29:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 032731FF27 for ; Mon, 29 May 2017 20:29:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=bHHhSYlD4u2Hp85NI2MongUs6wTNqnBh8lpqkEelHd4=; b=IhSvFTsgwHTzJ2LkkWBv2gRZd5 ji9MYB4PNaywS/RLJ+EtPIYYCX/Ax9glT8xlO0dty/LlHUplq5iShkeEfqsKpSOt5PRUXzpDuK55C ct+HJfFgtlfLaKqZI8rhTANOEZTPiZf8x8KZn7PQDUs52t2ZVfp9cZVHBREOqBT5LaNU+TLXHNFjB m8XjBSFmYjbTGHV2vXlv6CCvGARJuTDFMaMU7e32UJJuT2pIqu7JITaFkO0NqDMfoHjeQX/LJ0+Hb 4abNzgJHc5goGn5PEXUF1LkmVeiuUZdn6ucVdiPR0ww9ApP1UmVBMxpJkn7/br/xq1V7P0+QyYT4G doIMWz0Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dFRI2-0006Ud-Fh; Mon, 29 May 2017 20:29:22 +0000 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dFRHJ-0005fn-1Y for linux-arm-kernel@lists.infradead.org; Mon, 29 May 2017 20:28:39 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id 46A3820EB1; Mon, 29 May 2017 22:28:20 +0200 (CEST) Received: from localhost (LFbn-1-3856-160.w86-233.abo.wanadoo.fr [86.233.111.160]) by mail.free-electrons.com (Postfix) with ESMTPSA id C9B8720EC9; Mon, 29 May 2017 22:28:01 +0200 (CEST) From: Antoine Tenart To: herbert@gondor.apana.org.au, davem@davemloft.net, maxime.ripard@free-electrons.com, wens@csie.org, clabbe.montjoie@gmail.com Subject: [PATCH v2 04/12] crypto: sun4i-ss: cannot use DMA is the request is 0 length Date: Mon, 29 May 2017 22:27:30 +0200 Message-Id: <20170529202738.2167-5-antoine.tenart@free-electrons.com> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170529202738.2167-1-antoine.tenart@free-electrons.com> References: <20170529202738.2167-1-antoine.tenart@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170529_132837_373873_B4856F6D X-CRM114-Status: GOOD ( 10.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Antoine Tenart , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Do not use DMA is the request is 0 length. Signed-off-by: Antoine Tenart --- drivers/crypto/sunxi-ss/sun4i-ss-hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c index e53c3127b743..bc3cbde07219 100644 --- a/drivers/crypto/sunxi-ss/sun4i-ss-hash.c +++ b/drivers/crypto/sunxi-ss/sun4i-ss-hash.c @@ -250,7 +250,7 @@ static int sun4i_hash(struct ahash_request *areq) i = 0; in_sg = sg_next(in_sg); } - if (i == 1 && !op->len) + if (i == 1 && !op->len && areq->nbytes) dev_dbg(ss->dev, "We can DMA\n"); i = 0;