From patchwork Sat Sep 7 03:10:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 13794975 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 17CCFCE7B04 for ; Sat, 7 Sep 2024 03:05:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=gLCUNemtqspOuOgn5wRRmSmyL2hFZstbzm/Kt9cBEq4=; b=jFAZoFE7QrE/VjldqdXNA+xvTZ E6OZvYOhOKNQMu9vC7IX2WguicEDFHC9HK47RvMG3dLV6oOO60jEToEbgZmiI/8MUHT0jn2nZ4mpn EaDqkvU/H7/ovcmMQ8k9ey85X/1WBDwdEie9Hv26Lq/EkAeWmAujZ+5anQeaxkgjJ3OFaiSHy9aUN VuHc1DKZTwVm2xaFQOmdbiLyuawmxHe4HzcYsFpJjuELqfp2/B9fTTeoarZGxES36p57yjOW/ipbe Bi6+b0T1PWP6m6KPlaoHPt9eHmKG+E2lLEX26G/mgfbykh3RWx8rzMj0rOEiLKrPbQmL4+2HLUDKP is1E6NNw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1smllY-0000000EAS5-3fUA; Sat, 07 Sep 2024 03:05:36 +0000 Received: from szxga06-in.huawei.com ([45.249.212.32]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1smlhY-0000000E9UE-3TeX; Sat, 07 Sep 2024 03:01:31 +0000 Received: from mail.maildlp.com (unknown [172.19.88.163]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4X0yVf5Dq0z1xwtx; Sat, 7 Sep 2024 10:59:22 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id A8586180041; Sat, 7 Sep 2024 11:01:24 +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 11:01:23 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , Subject: [PATCH net-next v2 04/10] net: ethernet: ethoc: Convert using devm_clk_get_enabled() in ethoc_probe() Date: Sat, 7 Sep 2024 11:10:03 +0800 Message-ID: <20240907031009.3591057-6-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_200129_442914_F383B032 X-CRM114-Status: GOOD ( 11.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=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 free2 label, and the meaning of the free3 label is not clear, Changing it to free_mdiobus will make it more understandable. Signed-off-by: Li Zetao --- drivers/net/ethernet/ethoc.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/ethoc.c b/drivers/net/ethernet/ethoc.c index ad41c9019018..1a56e20cb679 100644 --- a/drivers/net/ethernet/ethoc.c +++ b/drivers/net/ethernet/ethoc.c @@ -1172,13 +1172,10 @@ static int ethoc_probe(struct platform_device *pdev) /* Allow the platform setup code to adjust MII management bus clock. */ if (!eth_clkfreq) { - struct clk *clk = devm_clk_get(&pdev->dev, NULL); + priv->clk = devm_clk_get_enabled(&pdev->dev, NULL); - if (!IS_ERR(clk)) { - priv->clk = clk; - clk_prepare_enable(clk); - eth_clkfreq = clk_get_rate(clk); - } + if (!IS_ERR(priv->clk)) + eth_clkfreq = clk_get_rate(priv->clk); } if (eth_clkfreq) { u32 clkdiv = MIIMODER_CLKDIV(eth_clkfreq / 2500000 + 1); @@ -1195,7 +1192,7 @@ static int ethoc_probe(struct platform_device *pdev) priv->mdio = mdiobus_alloc(); if (!priv->mdio) { ret = -ENOMEM; - goto free2; + goto free; } priv->mdio->name = "ethoc-mdio"; @@ -1208,7 +1205,7 @@ static int ethoc_probe(struct platform_device *pdev) ret = mdiobus_register(priv->mdio); if (ret) { dev_err(&netdev->dev, "failed to register MDIO bus\n"); - goto free3; + goto free_mdiobus; } ret = ethoc_mdio_probe(netdev); @@ -1240,10 +1237,8 @@ static int ethoc_probe(struct platform_device *pdev) netif_napi_del(&priv->napi); error: mdiobus_unregister(priv->mdio); -free3: +free_mdiobus: mdiobus_free(priv->mdio); -free2: - clk_disable_unprepare(priv->clk); free: free_netdev(netdev); out: @@ -1267,7 +1262,6 @@ static void ethoc_remove(struct platform_device *pdev) mdiobus_unregister(priv->mdio); mdiobus_free(priv->mdio); } - clk_disable_unprepare(priv->clk); unregister_netdev(netdev); free_netdev(netdev); }