From patchwork Sat Sep 7 03:10:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li Zetao X-Patchwork-Id: 13795018 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 A7FCECE7B04 for ; Sat, 7 Sep 2024 03:10:43 +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=41L1nEW/samYfOdu0jKmZpFpOmHOMMf27yFSYrqi2Ng=; b=AOjdwLGWlhOykGG9e6sMaeZN0d wuuLPRhyfRAsv4hZLFFo+nem1D0+rlqXN3wqTwNUW3u8GJLvH5Ju5kefvQlE8xRbUki16nrJpQi1B +CgzAQLXbdSaGvfZ3rCt5jz/h3j1ZYETB/gf0tm9ZdcNzOfUO7bFBc0tLaxbjupFNPp3YDmX6t2ns Qeq/o8/r8xqlzwrfd8Vcz7p7OK3HDv+pWQCXv2hs0vg6ll25E9D1igOg9VhxcYSkX8fxN4vleFm4k db9RL3YLczuXTQpPezyu98gqjoROgNAjJD1xmYLRL8kZ6aQZM8yoQahpKM1F0cCGWJNjfBmmQwwY4 gR6BbHRg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1smlqK-0000000EBAi-1SA0; Sat, 07 Sep 2024 03:10:32 +0000 Received: from szxga02-in.huawei.com ([45.249.212.188]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1smlha-0000000E9Uy-2hIt; Sat, 07 Sep 2024 03:01:34 +0000 Received: from mail.maildlp.com (unknown [172.19.163.252]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4X0yVp5msjzpVXD; Sat, 7 Sep 2024 10:59:30 +0800 (CST) Received: from kwepemd500012.china.huawei.com (unknown [7.221.188.25]) by mail.maildlp.com (Postfix) with ESMTPS id 7BCF51800CF; Sat, 7 Sep 2024 11:01:27 +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 11:01:26 +0800 From: Li Zetao To: , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , Subject: [PATCH net-next v2 07/10] net: lantiq_xrx200: Convert using devm_clk_get_enabled() in xrx200_probe() Date: Sat, 7 Sep 2024 11:10:06 +0800 Message-ID: <20240907031009.3591057-9-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_200131_372803_B29A2B24 X-CRM114-Status: GOOD ( 12.46 ) 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 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); }