From patchwork Sat Aug 31 02:13:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 826304 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5D40542A9E; Sat, 31 Aug 2024 02:05:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725069926; cv=none; b=kfvfR7xZBrMe6lhh0xO5rNImb59XaCKX14/MYbrR274iUvVgj0q5NItUu6Sy837z3d0gKVzOT0rtpinMg7aH/AxPnhG7TP/SH/BZIYwKXBFqQFlTgfBIIoItUdAFxipw08AFslIKp7A7eQhzh0SVHH6mutwaU8d2eonlhmyYE4c= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725069926; c=relaxed/simple; bh=CJkyw4Pe6fR3XV4v8fZkKyySghrcwh8OHib7UMXEgUQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BqwyYc2H34THwKEjjyp3tIu9E4aRJ91AgdyzizqyQUmqZwdtiYKM9eW+p3XfhJIYv6xP2ApnMbQgzuEYk/dsfOU3h41B/b+nEiSMaKn70jfGwUWesdACZzje5Nmr07gju5lDFOzv9NVNZJIwzCxV3X3syAxkrsQnMs2GQMH28sY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.162.112]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4WwddH3YQZz1j5Wh; Sat, 31 Aug 2024 10:05:07 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id 07782140158; Sat, 31 Aug 2024 10:05:22 +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, 31 Aug 2024 10:05:20 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , Subject: [PATCH net-next 04/12] net: ethernet: ethoc: Convert using devm_clk_get_enabled() in ethoc_probe() Date: Sat, 31 Aug 2024 10:13:26 +0800 Message-ID: <20240831021334.1907921-5-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240831021334.1907921-1-lizetao1@huawei.com> References: <20240831021334.1907921-1-lizetao1@huawei.com> Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemd500012.china.huawei.com (7.221.188.25) 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); }