From patchwork Tue Aug 15 15:13:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 1821418 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-ide-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4RQFFJ6ssSz1yf2 for ; Wed, 16 Aug 2023 01:15:16 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237611AbjHOPOn (ORCPT ); Tue, 15 Aug 2023 11:14:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237845AbjHOPOP (ORCPT ); Tue, 15 Aug 2023 11:14:15 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 52BDC173C for ; Tue, 15 Aug 2023 08:14:13 -0700 (PDT) Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RQF7t5rgNztRrD; Tue, 15 Aug 2023 23:10:34 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 15 Aug 2023 23:14:10 +0800 From: Li Zetao To: , , , , , , CC: , , Subject: [PATCH -next] ata: pata_imx: Use helper function devm_clk_get_enabled() Date: Tue, 15 Aug 2023 23:13:52 +0800 Message-ID: <20230815151352.1907861-1-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H5,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org After the commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), it can replace the pair of functions, devm_clk_get() and clk_prepare_enable() with a single helper function devm_clk_get_enabled(). Moreover, the driver will keeps a clock prepared (or enabled) during the whole lifetime of the driver, it is unnecessary to unprepare or disable clock explicitly when remove driver or in the error handling path. Signed-off-by: Li Zetao Reviewed-by: Sergey Shtylyov --- drivers/ata/pata_imx.c | 28 +++++++--------------------- 1 file changed, 7 insertions(+), 21 deletions(-) diff --git a/drivers/ata/pata_imx.c b/drivers/ata/pata_imx.c index 91da7ecec0fc..d0aa8fc929b4 100644 --- a/drivers/ata/pata_imx.c +++ b/drivers/ata/pata_imx.c @@ -141,21 +141,15 @@ static int pata_imx_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - priv->clk = devm_clk_get(&pdev->dev, NULL); + priv->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(priv->clk)) { - dev_err(&pdev->dev, "Failed to get clock\n"); + dev_err(&pdev->dev, "Failed to get and enable clock\n"); return PTR_ERR(priv->clk); } - ret = clk_prepare_enable(priv->clk); - if (ret) - return ret; - host = ata_host_alloc(&pdev->dev, 1); - if (!host) { - ret = -ENOMEM; - goto err; - } + if (!host) + return -ENOMEM; host->private_data = priv; ap = host->ports[0]; @@ -165,10 +159,8 @@ static int pata_imx_probe(struct platform_device *pdev) ap->flags |= ATA_FLAG_SLAVE_POSS; priv->host_regs = devm_platform_get_and_ioremap_resource(pdev, 0, &io_res); - if (IS_ERR(priv->host_regs)) { - ret = PTR_ERR(priv->host_regs); - goto err; - } + if (IS_ERR(priv->host_regs)) + return PTR_ERR(priv->host_regs); ap->ioaddr.cmd_addr = priv->host_regs + PATA_IMX_DRIVE_DATA; ap->ioaddr.ctl_addr = priv->host_regs + PATA_IMX_DRIVE_CONTROL; @@ -194,13 +186,9 @@ static int pata_imx_probe(struct platform_device *pdev) &pata_imx_sht); if (ret) - goto err; + return ret; return 0; -err: - clk_disable_unprepare(priv->clk); - - return ret; } static void pata_imx_remove(struct platform_device *pdev) @@ -211,8 +199,6 @@ static void pata_imx_remove(struct platform_device *pdev) ata_host_detach(host); __raw_writel(0, priv->host_regs + PATA_IMX_ATA_INT_EN); - - clk_disable_unprepare(priv->clk); } #ifdef CONFIG_PM_SLEEP