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: 9746933 X-Patchwork-Delegate: herbert@gondor.apana.org.au 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 6084B60246 for ; Wed, 24 May 2017 21:27:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4D69326E16 for ; Wed, 24 May 2017 21:27:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4255626E4D; Wed, 24 May 2017 21:27:22 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 03B2A26E16 for ; Wed, 24 May 2017 21:27:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933862AbdEXV1U (ORCPT ); Wed, 24 May 2017 17:27:20 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:50312 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S937716AbdEXV1T (ORCPT ); Wed, 24 May 2017 17:27:19 -0400 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 Cc: Antoine Tenart , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.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;