From patchwork Fri Aug 18 09:30:08 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: lizetao X-Patchwork-Id: 13357538 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 467E2C001DE for ; Fri, 18 Aug 2023 09:31:18 +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=V5PjGV/+hZQTBpyrPQysaW6ALtMhASTXtJDVcpYLm9c=; b=1UTp0OFFHCshB4 wjgKZ5+fxOcMdlznLhuadHKHtPPa7Pw0WI6wmFFjgP4nTP71mkeO7Xh9h/GFjb/zn+UbvhEg4raW4 yjuLiOYagkc3rHvMW5TiAbOLzINzOeIUaAKV2UuhIcBrWELX1CupKZTP0/X9HtQj7IrXOzxyXabgS XJ/d/7vI0uJmGcG+a5FBfLAykkqiefsbTq7nK7d99QjjL/eJAc/4yg5LpaiZYibhMkMvjK3Bmgw/q 83+3UotsHN7km/YeEL/Ox2AxHN32rQXzpSq3FuceLq3Jr3h2ho2mTWjkvYQyTlUw4Ipj1ydjs2yrv uYn21K6sLiPN8IGn4RJg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qWvoh-0085g3-0i; Fri, 18 Aug 2023 09:30:51 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qWvoV-0085aU-1w for linux-arm-kernel@lists.infradead.org; Fri, 18 Aug 2023 09:30:42 +0000 Received: from kwepemi500012.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RRxQZ5TzqzkXDM; Fri, 18 Aug 2023 17:29:10 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemi500012.china.huawei.com (7.221.188.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Fri, 18 Aug 2023 17:30:33 +0800 From: Li Zetao To: , , , , , , , , , , , , CC: , , , , Subject: [PATCH -next 01/11] gpio: cadence: Use helper function devm_clk_get_enabled() Date: Fri, 18 Aug 2023 17:30:08 +0800 Message-ID: <20230818093018.1051434-2-lizetao1@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230818093018.1051434-1-lizetao1@huawei.com> References: <20230818093018.1051434-1-lizetao1@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemi500012.china.huawei.com (7.221.188.12) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230818_023040_129769_94DBF878 X-CRM114-Status: GOOD ( 12.25 ) 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 Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be replaced by devm_clk_get_enabled() when the driver enables (and possibly prepares) the clocks for the whole lifetime of the device. Moreover, it is no longer necessary to unprepare and disable the clocks explicitly. Signed-off-by: Li Zetao --- drivers/gpio/gpio-cadence.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/gpio/gpio-cadence.c b/drivers/gpio/gpio-cadence.c index 3720b90cad10..a545baed9136 100644 --- a/drivers/gpio/gpio-cadence.c +++ b/drivers/gpio/gpio-cadence.c @@ -203,18 +203,12 @@ static int cdns_gpio_probe(struct platform_device *pdev) cgpio->gc.request = cdns_gpio_request; cgpio->gc.free = cdns_gpio_free; - cgpio->pclk = devm_clk_get(&pdev->dev, NULL); + cgpio->pclk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(cgpio->pclk)) { ret = PTR_ERR(cgpio->pclk); dev_err(&pdev->dev, - "Failed to retrieve peripheral clock, %d\n", ret); - goto err_revert_dir; - } - - ret = clk_prepare_enable(cgpio->pclk); - if (ret) { - dev_err(&pdev->dev, - "Failed to enable the peripheral clock, %d\n", ret); + "Failed to retrieve and enable peripheral clock, %d\n", + ret); goto err_revert_dir; } @@ -234,7 +228,7 @@ static int cdns_gpio_probe(struct platform_device *pdev) GFP_KERNEL); if (!girq->parents) { ret = -ENOMEM; - goto err_disable_clk; + goto err_revert_dir; } girq->parents[0] = irq; girq->default_type = IRQ_TYPE_NONE; @@ -244,7 +238,7 @@ static int cdns_gpio_probe(struct platform_device *pdev) ret = devm_gpiochip_add_data(&pdev->dev, &cgpio->gc, cgpio); if (ret < 0) { dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret); - goto err_disable_clk; + goto err_revert_dir; } cgpio->bypass_orig = ioread32(cgpio->regs + CDNS_GPIO_BYPASS_MODE); @@ -259,9 +253,6 @@ static int cdns_gpio_probe(struct platform_device *pdev) platform_set_drvdata(pdev, cgpio); return 0; -err_disable_clk: - clk_disable_unprepare(cgpio->pclk); - err_revert_dir: iowrite32(dir_prev, cgpio->regs + CDNS_GPIO_DIRECTION_MODE); @@ -273,7 +264,6 @@ static int cdns_gpio_remove(struct platform_device *pdev) struct cdns_gpio_chip *cgpio = platform_get_drvdata(pdev); iowrite32(cgpio->bypass_orig, cgpio->regs + CDNS_GPIO_BYPASS_MODE); - clk_disable_unprepare(cgpio->pclk); return 0; }