From patchwork Fri Jun 28 02:46:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fuqian Huang X-Patchwork-Id: 11021193 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A5F2C76 for ; Fri, 28 Jun 2019 02:46:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 99229286E5 for ; Fri, 28 Jun 2019 02:46:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8CBA328775; Fri, 28 Jun 2019 02:46:57 +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=-6.2 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_WEB autolearn=unavailable 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 4284F286E5 for ; Fri, 28 Jun 2019 02:46:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727070AbfF1Cqx (ORCPT ); Thu, 27 Jun 2019 22:46:53 -0400 Received: from mail-pl1-f193.google.com ([209.85.214.193]:40935 "EHLO mail-pl1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726817AbfF1Cqx (ORCPT ); Thu, 27 Jun 2019 22:46:53 -0400 Received: by mail-pl1-f193.google.com with SMTP id a93so2360256pla.7; Thu, 27 Jun 2019 19:46:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=04GljEtl2h3DmnTzFw9yoiLkqcADLLyfQ+DeoECtL/g=; b=DfYRJv3o9Bcrqrgqw90Ljs1hZlo0ut9UVtzdSkOf+R1UrqOE5qgOpWli4VXM0vexVS kcLQdIIY41qtuPt77bpfXCCz78DVSEt8nHQLWrbGGHdvoUJiz0AHcKv0zey3ymekMWQW 3ZYA8ry/J/fEnLyaQxY/BCrVNKg3WvLn+S+OzgWsXccwFp47WifaGx+EJq/hvLPyjB5T MReyTie+sBqblJjpj/MiGCu3GI5I5tLhd2JdRgoeCaOJaKr2J4U4bH/SxUo06oabCEJW tSJtSMgB5G+PcmJykIpGyPCl2lY/vlSPJFcP9+0kFoqBvtyZKe04tgqrO4PjH2qf54hN q8Xg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=04GljEtl2h3DmnTzFw9yoiLkqcADLLyfQ+DeoECtL/g=; b=V/wIPX6CW+2PXvu9P1h6h893H9ZSX+9n07VADXMMIUCql8qeJbAD8Qk1U5MnIxt8o3 IjhGSona3m5xDfVpymk5fvWX2b+8pIxBGJMA+5C4aCfByd9w4nrVpS/Yn8ea1nVXykI2 3LYHWPl+PzsQs9HfvsmM8pmmZbLkzdb4byfwTMXgWXsLhKghSyPgUtc10jQFOCJuihNT WNbhnhLZ+qnXdRIwhr1PjFSe9Xu79+4xm1IPZbz5fFfBl2jsc6LoDkmAFyUGdhLb9p45 bi7lVFKtMme4DSDCjZEH+vam3UKl6rmNpXcUf4qKreoo7LY4K6oR48lqD+67J5wRpV9Q WLFw== X-Gm-Message-State: APjAAAUkRJpPaoZOk1WieYSC9dDz91lxnttPkBj+HB/rxH0c7HPuBXXG qFh33YfBe2S+foEQdu6lth0= X-Google-Smtp-Source: APXvYqwZWLNOSYNebra3h7VxqKFQWWgskOaNU9GLrmfb1nSa3+umdvA8TKyiTag+IOKEC5NcyTD2Fg== X-Received: by 2002:a17:902:9a42:: with SMTP id x2mr8693861plv.106.1561690012576; Thu, 27 Jun 2019 19:46:52 -0700 (PDT) Received: from hfq-skylake.ipads-lab.se.sjtu.edu.cn ([202.120.40.82]) by smtp.googlemail.com with ESMTPSA id j15sm450696pfr.146.2019.06.27.19.46.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 27 Jun 2019 19:46:52 -0700 (PDT) From: Fuqian Huang Cc: Fuqian Huang , Dan Williams , Vinod Koul , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Sinan Kaya , Andy Gross , David Brown , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v2 06/27] dma: remove memset after dma_alloc_coherent/dmam_alloc_coherent Date: Fri, 28 Jun 2019 10:46:42 +0800 Message-Id: <20190628024642.15089-1-huangfq.daxian@gmail.com> X-Mailer: git-send-email 2.11.0 To: unlisted-recipients:; (no To-header on input) Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In commit af7ddd8a627c ("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"), dma_alloc_coherent/dmam_alloc_coherent has already zeroed the memory. So memset is not needed. Signed-off-by: Fuqian Huang --- drivers/dma/imx-sdma.c | 4 ---- drivers/dma/qcom/hidma_ll.c | 2 -- 2 files changed, 6 deletions(-) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 99d9f431ae2c..54d86359bdf8 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1886,10 +1886,6 @@ static int sdma_init(struct sdma_engine *sdma) sdma->context_phys = ccb_phys + MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control); - /* Zero-out the CCB structures array just allocated */ - memset(sdma->channel_control, 0, - MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control)); - /* disable all channels */ for (i = 0; i < sdma->drvdata->num_events; i++) writel_relaxed(0, sdma->regs + chnenbl_ofs(sdma, i)); diff --git a/drivers/dma/qcom/hidma_ll.c b/drivers/dma/qcom/hidma_ll.c index 5bf8b145c427..bb4471e84e48 100644 --- a/drivers/dma/qcom/hidma_ll.c +++ b/drivers/dma/qcom/hidma_ll.c @@ -749,7 +749,6 @@ struct hidma_lldev *hidma_ll_init(struct device *dev, u32 nr_tres, if (!lldev->tre_ring) return NULL; - memset(lldev->tre_ring, 0, (HIDMA_TRE_SIZE + 1) * nr_tres); lldev->tre_ring_size = HIDMA_TRE_SIZE * nr_tres; lldev->nr_tres = nr_tres; @@ -769,7 +768,6 @@ struct hidma_lldev *hidma_ll_init(struct device *dev, u32 nr_tres, if (!lldev->evre_ring) return NULL; - memset(lldev->evre_ring, 0, (HIDMA_EVRE_SIZE + 1) * nr_tres); lldev->evre_ring_size = HIDMA_EVRE_SIZE * nr_tres; /* the EVRE ring has to be EVRE_SIZE aligned */