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: Li Zetao X-Patchwork-Id: 13357516 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41C85C7115D for ; Fri, 18 Aug 2023 09:31:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359126AbjHRJbJ (ORCPT ); Fri, 18 Aug 2023 05:31:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53550 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359130AbjHRJal (ORCPT ); Fri, 18 Aug 2023 05:30:41 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D96583A8B; Fri, 18 Aug 2023 02:30:36 -0700 (PDT) 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 Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.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; }