From patchwork Mon Mar 11 06:27:34 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Smirnov X-Patchwork-Id: 1054157 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="IAZ2mVhy"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44Hp8Y1kQtz9s55 for ; Mon, 11 Mar 2019 17:28:45 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726834AbfCKG2j (ORCPT ); Mon, 11 Mar 2019 02:28:39 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:43393 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726796AbfCKG2M (ORCPT ); Mon, 11 Mar 2019 02:28:12 -0400 Received: by mail-pf1-f194.google.com with SMTP id q17so2963368pfh.10; Sun, 10 Mar 2019 23:28:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ZKL7eW1poGCQmaULAOmnoaVFxxTL+cJk49BCVKea4N0=; b=IAZ2mVhyYFRuxyvCiTtvbi7Iivi1OV1uRcbtI8EGoiOTOUCAPfqvnUDVbRkqm76moH vunXTnWEkPeK0O8RP7YoKWAghl5rU3S/3suequkkS9bQJdq303FC2pPAnPycY9V2zdWf BuryiZfQgnPDs7p9m72JvOgj0RW0yplb0qatjOVpIxLe26WmrZtg7oEL0vkqVF7Ug6wk QI6hcVQS0fP7yg1oG/sPAnLPPhHv9h7rtH7Ufk2lqhJIMchr/qGIIrtQwR1859ywEf5e TJ3TYfGU+okQ77DX1hcBY/8g6/w+MULVJ9sgergD+B2yWg3MctpUi5BGERWeDhENtlxN x9zw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ZKL7eW1poGCQmaULAOmnoaVFxxTL+cJk49BCVKea4N0=; b=E3ipo9E3t0dvwQItEY8kIOXQ5zBU6ruL9HtFfWBDJ5PuGwvkWuyWzSElMeJHmubNGX pZ9cTX9lx/ZWUG6BQOYv/ellqtXXpcmKx7m02y/ZXvVOp9hKxd81taCtG5igu6mra5eX gb1A5LTimQ45QSfa0c3dj+NUhtxsZSG8Zxitfy3LFEKMDKGMSdZ/d5vHhzTqBNxpiYNe xXpIfW35OViFezieH7czamcHexSbtCDzKZfvWFcqdEU59mABDdqGvPTsSvU++/17lR3T OiawvwNkH/x5Cv3HwEZt66/Wn91xa44dVtfuQiI+7hzV457kgLWJ0syB6do4GRs5uRWw oxHQ== X-Gm-Message-State: APjAAAVVJfBEuLHSwFJfZmNrZJMs6ilaVVRKnKt4dNd4/+yv21BOfGr+ td14TVYbCjcpgG+qodnLgw136gKKSlo= X-Google-Smtp-Source: APXvYqyiKb0bfD2ZCOFEcoXC4uTwizn3IGP3xDhXnBQKJuOfaxHmmkwkm8gibTR0//f1LeS9dnFyNA== X-Received: by 2002:a17:902:2a48:: with SMTP id i66mr31389015plb.14.1552285690897; Sun, 10 Mar 2019 23:28:10 -0700 (PDT) Received: from squirtle.lan (c-24-22-235-96.hsd1.wa.comcast.net. [24.22.235.96]) by smtp.gmail.com with ESMTPSA id f192sm10241679pfc.180.2019.03.10.23.28.09 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 10 Mar 2019 23:28:10 -0700 (PDT) From: Andrey Smirnov To: linux-gpio@vger.kernel.org Cc: Andrey Smirnov , Linus Walleij , Bartosz Golaszewski , Chris Healy , Andrew Lunn , Heiner Kallweit , Fabio Estevam , linux-kernel@vger.kernel.org, linux-imx@nxp.com Subject: [PATCH 4/7] gpio: vf610: Use devres to disable clk_port Date: Sun, 10 Mar 2019 23:27:34 -0700 Message-Id: <20190311062737.6652-5-andrew.smirnov@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190311062737.6652-1-andrew.smirnov@gmail.com> References: <20190311062737.6652-1-andrew.smirnov@gmail.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Clk_port should be disabled in all error paths in the code that follws, including the case when either gpiochip_add_data() or gpiochip_irqchip_add() fail. To simplify things fix this by using devm_add_action_or_reset() to disable corresponding clock in case of any erros as well as driver/device removal. Signed-off-by: Andrey Smirnov Cc: Linus Walleij Cc: Bartosz Golaszewski Cc: Chris Healy Cc: Andrew Lunn Cc: Heiner Kallweit Cc: Fabio Estevam Cc: linux-gpio@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-imx@nxp.com --- drivers/gpio/gpio-vf610.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c index bb35cedd05e3..78c1f8ebbe8f 100644 --- a/drivers/gpio/gpio-vf610.c +++ b/drivers/gpio/gpio-vf610.c @@ -232,6 +232,11 @@ static int vf610_gpio_irq_set_wake(struct irq_data *d, u32 enable) return 0; } +static void vf610_gpio_disable_clk(void *data) +{ + clk_disable_unprepare(data); +} + static int vf610_gpio_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -267,6 +272,10 @@ static int vf610_gpio_probe(struct platform_device *pdev) ret = clk_prepare_enable(port->clk_port); if (ret) return ret; + ret = devm_add_action_or_reset(dev, vf610_gpio_disable_clk, + port->clk_port); + if (ret) + return ret; } else if (port->clk_port == ERR_PTR(-EPROBE_DEFER)) { /* * Percolate deferrals, for anything else, @@ -278,12 +287,9 @@ static int vf610_gpio_probe(struct platform_device *pdev) port->clk_gpio = devm_clk_get(&pdev->dev, "gpio"); if (!IS_ERR(port->clk_gpio)) { ret = clk_prepare_enable(port->clk_gpio); - if (ret) { - clk_disable_unprepare(port->clk_port); + if (ret) return ret; - } } else if (port->clk_gpio == ERR_PTR(-EPROBE_DEFER)) { - clk_disable_unprepare(port->clk_port); return PTR_ERR(port->clk_gpio); } @@ -339,8 +345,6 @@ static int vf610_gpio_remove(struct platform_device *pdev) struct vf610_gpio_port *port = platform_get_drvdata(pdev); gpiochip_remove(&port->gc); - if (!IS_ERR(port->clk_port)) - clk_disable_unprepare(port->clk_port); if (!IS_ERR(port->clk_gpio)) clk_disable_unprepare(port->clk_gpio);