From patchwork Wed May 24 19:06:45 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoine Tenart X-Patchwork-Id: 9746955 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 09BE660246 for ; Wed, 24 May 2017 21:28:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EFC5626E3A for ; Wed, 24 May 2017 21:28:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E470926E4D; Wed, 24 May 2017 21:28:55 +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 7BDEA26E3A for ; Wed, 24 May 2017 21:28:55 +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=EPy8bNvaMH9hRVIIr9eDqonb0d stUZeOzax8yObcqKo4jGS/SF7A3zdJaKsmRuo/Zgk4OgpmGdNVgqJNFhbdyNfRElG5ZiCHd/nagpF 2L/PaZLdU0F8MUhofauVD+kpnRZmfE9PVq4Q5iNGXqcRgH91qU2KVJezeDc2tmL+zGx0BNc6q93lI uipulEosaXpR53gw4b8TsQhZ2M6V3wVi7Sx8FPr8D9QBvyIq8I596lw6kOlun4KXmR5JhS+H4/66D A/wOf8PQ/wDY3cyalf8hq7zFgyHI0Hfz521f7uiRvgBiA2U5BiWVi4G9uX8K1PZVU/hnJh9Pi7RC3 eqISFZ1A==; 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 1dDdpu-0002zx-3X; Wed, 24 May 2017 21:28:54 +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 1dDdot-0001ZT-58 for linux-arm-kernel@lists.infradead.org; Wed, 24 May 2017 21:27:56 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id BE52120B86; Wed, 24 May 2017 23:27:17 +0200 (CEST) Received: from localhost (unknown [80.12.37.224]) by mail.free-electrons.com (Postfix) with ESMTPSA id 8899F20774; Wed, 24 May 2017 23:27:17 +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 04/11] crypto: sun4i-ss: cannot use DMA is the request is 0 length Date: Wed, 24 May 2017 21:06:45 +0200 Message-Id: <20170524190652.13278-5-antoine.tenart@free-electrons.com> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170524190652.13278-1-antoine.tenart@free-electrons.com> References: <20170524190652.13278-1-antoine.tenart@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170524_142752_087733_9DEDF1A3 X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. 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;