From patchwork Sat Aug 31 02:13:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 824566 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (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 467071865C; Sat, 31 Aug 2024 02:06:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725069963; cv=none; b=saXn8XKDYHVBBwUSeFRcptqS6ldGm3+N6eIEuIaMi2uHzefczd9CVn1uSheDviJigm2TegNMH/ULsfCx5+4RWAGDsRX6Yxx+sSuqlB+Vdr98QsN/oqt3t/qyDsqjLx30TE8RLIHHNkzSOXsFG8pRzRhXXaA/tGCh4dYHnCQh6cc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725069963; c=relaxed/simple; bh=NTT6omI+1h722IadGdfo3Cu5+r9CNZ+yAF34IF8fqzU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BpbAWAFEPp1N0ZsIhBEageS0NjFrP1Dw0c7aSMzd3iy+Alf+gJqZ74UdxtsUOMo04wrq2k+zJuo2jdbivxj7yK4q2Rgva6YZ4b/V+/V96n6/jni7oBg52DVpJ/rRMII4f3Cv3zhPnOz/KaFHrlpNyLIEJKdbFe7jcsKcWpBqFRk= 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=45.249.212.190 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 [172.19.88.214]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4WwddL2XF8z2CpGh; Sat, 31 Aug 2024 10:05:10 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id 128A31A016C; Sat, 31 Aug 2024 10:05:25 +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 10:05:23 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , Subject: [PATCH net-next 07/12] net: lantiq_xrx200: Convert using devm_clk_get_enabled() in xrx200_probe() Date: Sat, 31 Aug 2024 10:13:29 +0800 Message-ID: <20240831021334.1907921-8-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 err_unprepare_clk label, and the original error process can change to the err_uninit_dma error path. Some comments have also been adjusted. Signed-off-by: Li Zetao --- drivers/net/ethernet/lantiq_xrx200.c | 17 +++-------------- 1 file changed, 3 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/lantiq_xrx200.c b/drivers/net/ethernet/lantiq_xrx200.c index 07904a528f21..976748551643 100644 --- a/drivers/net/ethernet/lantiq_xrx200.c +++ b/drivers/net/ethernet/lantiq_xrx200.c @@ -589,8 +589,8 @@ static int xrx200_probe(struct platform_device *pdev) if (priv->chan_tx.dma.irq < 0) return -ENOENT; - /* get the clock */ - priv->clk = devm_clk_get(dev, NULL); + /* get the clock and enable clock gate */ + priv->clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(priv->clk)) { dev_err(dev, "failed to get clock\n"); return PTR_ERR(priv->clk); @@ -605,11 +605,6 @@ static int xrx200_probe(struct platform_device *pdev) if (err) return err; - /* enable clock gate */ - err = clk_prepare_enable(priv->clk); - if (err) - goto err_uninit_dma; - /* set IPG to 12 */ xrx200_pmac_mask(priv, PMAC_RX_IPG_MASK, 0xb, PMAC_RX_IPG); @@ -628,13 +623,10 @@ static int xrx200_probe(struct platform_device *pdev) err = register_netdev(net_dev); if (err) - goto err_unprepare_clk; + goto err_uninit_dma; return 0; -err_unprepare_clk: - clk_disable_unprepare(priv->clk); - err_uninit_dma: xrx200_hw_cleanup(priv); @@ -654,9 +646,6 @@ static void xrx200_remove(struct platform_device *pdev) /* remove the actual device */ unregister_netdev(net_dev); - /* release the clock */ - clk_disable_unprepare(priv->clk); - /* shut down hardware */ xrx200_hw_cleanup(priv); }