From patchwork Sat Sep 7 03:10:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 13795019 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A6B1CE6FE47 for ; Sat, 7 Sep 2024 03:11:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Qa7MZUL8ySZWkSsAdPMYJlbAd0pA1aapavxFSHad/Js=; b=W0MKikkDNtCiNs z8jy8kvbIred1lqhtPUkOXLeOjTgwXUeA1J1x+50bmlfpcZPEnEfRHRMDEhi9RHbOVzNVilgAyfA5 Jddzkjsi9aruEthyraxDpshcmrtswtrV/zhUOWNgicUKT84sCTGnN6WWJC+xMSFvfU1BPJGMnPR5Q /o4gVq+vEy9jRv7YIrU/PJbz4irzWW78Cidie8vlEC2wQywtWmllhxf0sx6h7FqdHF9Gm0cSdQiMZ ujEQCjNv9buRPg4JCyJDKrfiQTQeBraUTuC/QadZ1t2oy13rvloKJgK0d/evQA0hEJJgEGfQVjIxq OK5bhSjKK7iq1tA28iCA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1smlrT-0000000EBgP-1Jmv; Sat, 07 Sep 2024 03:11:43 +0000 Received: from szxga03-in.huawei.com ([45.249.212.189]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1smlhc-0000000E9XB-04o5; Sat, 07 Sep 2024 03:01:36 +0000 Received: from mail.maildlp.com (unknown [172.19.162.254]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4X0yY400BHz69LM; Sat, 7 Sep 2024 11:01:27 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id 6B0421800F2; Sat, 7 Sep 2024 11:01:29 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemd500012.china.huawei.com (7.221.188.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.34; Sat, 7 Sep 2024 11:01:28 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , Subject: [PATCH net-next v2 09/10] net: ethernet: sunplus: Convert using devm_clk_get_enabled() in spl2sw_probe() Date: Sat, 7 Sep 2024 11:10:08 +0800 Message-ID: <20240907031009.3591057-11-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240907031009.3591057-1-lizetao1@huawei.com> References: <20240907031009.3591057-1-lizetao1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemd500012.china.huawei.com (7.221.188.25) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240906_200132_728603_155CB15C X-CRM114-Status: GOOD ( 14.32 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Use devm_clk_get_enabled() instead of devm_clk_get() + clk_prepare_enable(), which can make the clk consistent with the device life cycle and reduce the risk of unreleased clk resources. Since the device framework has automatically released the clk resource, there is no need to execute clk_disable_unprepare(clk) on the error path, drop the out_clk_disable label, and the original error process can return directly. Some comments have also been adjusted. After this modification , it is no longer necessary to use clk, so delete the clk member of the spl2sw_common structure. Signed-off-by: Li Zetao --- v1 -> v2: Delete the clk member of the spl2sw_common structure v1: https://lore.kernel.org/all/20240831021334.1907921-10-lizetao1@huawei.com/ drivers/net/ethernet/sunplus/spl2sw_define.h | 1 - drivers/net/ethernet/sunplus/spl2sw_driver.c | 25 +++++++------------- 2 files changed, 9 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/sunplus/spl2sw_define.h b/drivers/net/ethernet/sunplus/spl2sw_define.h index acc6c1228ebc..6318eccc6c4e 100644 --- a/drivers/net/ethernet/sunplus/spl2sw_define.h +++ b/drivers/net/ethernet/sunplus/spl2sw_define.h @@ -224,7 +224,6 @@ struct spl2sw_common { struct platform_device *pdev; struct reset_control *rstc; - struct clk *clk; void *desc_base; dma_addr_t desc_dma; diff --git a/drivers/net/ethernet/sunplus/spl2sw_driver.c b/drivers/net/ethernet/sunplus/spl2sw_driver.c index 391a1bc7f446..887da05bc204 100644 --- a/drivers/net/ethernet/sunplus/spl2sw_driver.c +++ b/drivers/net/ethernet/sunplus/spl2sw_driver.c @@ -327,6 +327,7 @@ static int spl2sw_probe(struct platform_device *pdev) struct net_device *ndev; struct spl2sw_mac *mac; u8 mac_addr[ETH_ALEN]; + struct clk *clk; int irq, i, ret; if (platform_get_drvdata(pdev)) @@ -355,12 +356,12 @@ static int spl2sw_probe(struct platform_device *pdev) return ret; irq = ret; - /* Get clock controller. */ - comm->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(comm->clk)) { - dev_err_probe(&pdev->dev, PTR_ERR(comm->clk), + /* Get and enable clock controller. */ + clk = devm_clk_get_enabled(&pdev->dev, NULL); + if (IS_ERR(clk)) { + dev_err_probe(&pdev->dev, PTR_ERR(clk), "Failed to retrieve clock controller!\n"); - return PTR_ERR(comm->clk); + return PTR_ERR(clk); } /* Get reset controller. */ @@ -371,10 +372,6 @@ static int spl2sw_probe(struct platform_device *pdev) return PTR_ERR(comm->rstc); } - /* Enable clock. */ - ret = clk_prepare_enable(comm->clk); - if (ret) - return ret; udelay(1); /* Reset MAC */ @@ -388,7 +385,7 @@ static int spl2sw_probe(struct platform_device *pdev) dev_name(&pdev->dev), comm); if (ret) { dev_err(&pdev->dev, "Failed to request irq #%d!\n", irq); - goto out_clk_disable; + return ret; } /* Initialize TX and RX descriptors. */ @@ -396,7 +393,7 @@ static int spl2sw_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "Fail to initialize mac descriptors!\n"); spl2sw_descs_free(comm); - goto out_clk_disable; + return ret; } /* Initialize MAC. */ @@ -406,7 +403,7 @@ static int spl2sw_probe(struct platform_device *pdev) ret = spl2sw_mdio_init(comm); if (ret) { dev_err(&pdev->dev, "Failed to initialize mdio bus!\n"); - goto out_clk_disable; + return ret; } /* Get child node ethernet-ports. */ @@ -506,8 +503,6 @@ static int spl2sw_probe(struct platform_device *pdev) out_free_mdio: spl2sw_mdio_remove(comm); -out_clk_disable: - clk_disable_unprepare(comm->clk); return ret; } @@ -536,8 +531,6 @@ static void spl2sw_remove(struct platform_device *pdev) netif_napi_del(&comm->tx_napi); spl2sw_mdio_remove(comm); - - clk_disable_unprepare(comm->clk); } static const struct of_device_id spl2sw_of_match[] = {