From patchwork Mon Jul 15 03:17:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fuqian Huang X-Patchwork-Id: 11043323 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 8C90F13A4 for ; Mon, 15 Jul 2019 03:17:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6FD8A27F90 for ; Mon, 15 Jul 2019 03:17:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 52CB627F94; Mon, 15 Jul 2019 03:17:24 +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=-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=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 0891E27F90 for ; Mon, 15 Jul 2019 03:17:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726916AbfGODRX (ORCPT ); Sun, 14 Jul 2019 23:17:23 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:35483 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726074AbfGODRX (ORCPT ); Sun, 14 Jul 2019 23:17:23 -0400 Received: by mail-pg1-f195.google.com with SMTP id s1so688682pgr.2; Sun, 14 Jul 2019 20:17:22 -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=kb+x/QfQL3MhHmQt7WtgTjEDw3oPpOHTLxeQqt85Sps=; b=FyizgDvESf0WxQAwT0SmLWw0LWmQhG/GqMsWQbLcchozulcZDeW8RA646zEZU/iBe1 FvEPS84PQqkYYTQHzFA6nqMqQYL1K0VT9Cu4ymMkQAgEnXgg+4aKO8wZ+QSc6Wbwiuj6 fj898vDRCSR6rWtvaKmLXD8+9VGWXrVaGh5mGtkvNCAiDevV0YNRB91r+mOJONBdL5Iu R0go95hfRJSrk3iAmNQYQP/bteZP5Uzbwh6R/sGJB6HP2lARLbRiHJyZ4AGVLCD1fzSd OkUVmmKxpRsAUbzu1NOJUkqd6/11nkXA/0caghE2Bx/9xAHYXlCxQNp1HYPVln8u+C+C ytzw== 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=kb+x/QfQL3MhHmQt7WtgTjEDw3oPpOHTLxeQqt85Sps=; b=h4sNo+SZPBNTj45HdB3FBuP8YZz3tMggzid+5MXKHPqe8nrbD27zSaLWQcQ0wOgvAC QTeYkqOdzSBPWE/vig3O4wk8OiREsD+3xxeHRZhxsFAYmnzoRHn51UPZmA5W9Z8g2daj 4TPyXGZ+qzEckzU3FOFmwJf+NMJUWqOlbSGkY/kQTTjHmVREYr7258jsypnuVh6Fvw6b RB/g5+u7Yadi2/q03HF6CPPCL1fBqboW3DyJmsPWaErOydUCK9a5R5AKfFZOYdelxywJ Bi+y9BvjU3obA/eNhuTzznyQwdHizXIQHDnoneGDaambLSRVxXLkLzvRGCFah9rxc0ZR mZsw== X-Gm-Message-State: APjAAAUxu99VwZ7irt851aJmbVAcaedHWsx1KVi3AsMn/ToG4U5TlofF 8sRo8RiRr+ddIN0aAcdN7SAvXDBaX3c= X-Google-Smtp-Source: APXvYqz6wZgg8ErMw/22BWmPi/6AZiUkRYU00MUkLmykKZJoUOrdWhNoxhMCglQZxUTYlB3JBQU/Mw== X-Received: by 2002:a65:6081:: with SMTP id t1mr24882534pgu.9.1563160642510; Sun, 14 Jul 2019 20:17:22 -0700 (PDT) Received: from hfq-skylake.ipads-lab.se.sjtu.edu.cn ([202.120.40.82]) by smtp.googlemail.com with ESMTPSA id r9sm21256921pjq.3.2019.07.14.20.17.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 14 Jul 2019 20:17:22 -0700 (PDT) From: Fuqian Huang Cc: Vinod Koul , Shawn Guo , Sascha Hauer , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Fuqian Huang Subject: [PATCH v3 03/24] dmaengine: imx-sdma: Remove call to memset after dma_alloc_coherent Date: Mon, 15 Jul 2019 11:17:16 +0800 Message-Id: <20190715031716.6328-1-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 518a2f1925c3 ("dma-mapping: zero memory returned from dma_alloc_*"), dma_alloc_coherent has already zeroed the memory. So memset is not needed. Signed-off-by: Fuqian Huang --- Changes in v3: - Use actual commit rather than the merge commit in the commit message drivers/dma/imx-sdma.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 4ec84a633bd3..decfb9e9648a 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));