From patchwork Thu Aug 27 18:58:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 255041 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFD1EC433E3 for ; Thu, 27 Aug 2020 19:00:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B334A20786 for ; Thu, 27 Aug 2020 19:00:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598554827; bh=AUHZeGZQ1QvvZ/NYV0F6hVwKHpi1jDQ3ZUVwX6+r8bQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nH704VvtoSu40FE2FRXxOKkPu7iggRNjTalbeXDUFT61i+pb6tbczTdJQJtroVVi0 AsvoW0qAFnhyRCkOWdmERb5fZXs0XEpV63q9cUTNW+GA/43NcYK33BEih7QcYljnNC Jcd7mNKdiWH2/v7Ac5t3p6BJ4EVMAHzOcull755Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728307AbgH0TAI (ORCPT ); Thu, 27 Aug 2020 15:00:08 -0400 Received: from mail.kernel.org ([198.145.29.99]:50888 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728266AbgH0TAG (ORCPT ); Thu, 27 Aug 2020 15:00:06 -0400 Received: from localhost.localdomain (unknown [194.230.155.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2B4F922CBE; Thu, 27 Aug 2020 19:00:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598554806; bh=AUHZeGZQ1QvvZ/NYV0F6hVwKHpi1jDQ3ZUVwX6+r8bQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zkF6n24lTgHqUVxU+PDGf00J7EB+I7AhGFYaUwlB4dHFu8cDAHSMJRo+YS6mG0Tbe KvRCoLchHn1quvZXYJAGypeGfXcAJJJpx6WOoLO95JIidHjm+SP93NL5rIDfgLOw44 z/bzXV7k+O56zTRMvRwHr5EbU5VMdXTRAmgckP10= From: Krzysztof Kozlowski To: Linus Walleij , Bartosz Golaszewski , Dmitry Torokhov , Hans de Goede , Bastien Nocera , Sangwon Jee , Eugen Hristev , Andy Shevchenko , linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, platform-driver-x86@vger.kernel.org, clang-built-linux@googlegroups.com Cc: Krzysztof Kozlowski Subject: [PATCH v3 25/27] Input: gpio_keys - Simplify with dev_err_probe() Date: Thu, 27 Aug 2020 20:58:27 +0200 Message-Id: <20200827185829.30096-26-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200827185829.30096-1-krzk@kernel.org> References: <20200827185829.30096-1-krzk@kernel.org> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Common pattern of handling deferred probe can be simplified with dev_err_probe() and devm_fwnode_gpiod_get_optional(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Hans de Goede Reviewed-by: Andy Shevchenko --- Changes since v2: 1. Preserve comment, 2. Include to fix warning on clang (reported by kbuild), 3. Fix use of uninitialized "error" variable. Changes since v1: 1. Use devm_fwnode_gpiod_get_optional --- drivers/input/keyboard/gpio_keys.c | 25 ++++++++----------------- 1 file changed, 8 insertions(+), 17 deletions(-) diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index f2d4e4daa818..160d94b1c2c0 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -494,23 +495,13 @@ static int gpio_keys_setup_key(struct platform_device *pdev, spin_lock_init(&bdata->lock); if (child) { - bdata->gpiod = devm_fwnode_gpiod_get(dev, child, - NULL, GPIOD_IN, desc); - if (IS_ERR(bdata->gpiod)) { - error = PTR_ERR(bdata->gpiod); - if (error == -ENOENT) { - /* - * GPIO is optional, we may be dealing with - * purely interrupt-driven setup. - */ - bdata->gpiod = NULL; - } else { - if (error != -EPROBE_DEFER) - dev_err(dev, "failed to get gpio: %d\n", - error); - return error; - } - } + /* + * GPIO is optional, we may be dealing with purely + * interrupt-driven setup. + */ + bdata->gpiod = devm_fwnode_gpiod_get_optional(dev, child, NULL, GPIOD_IN, desc); + if (IS_ERR(bdata->gpiod)) + return dev_err_probe(dev, PTR_ERR(bdata->gpiod), "failed to get gpio\n"); } else if (gpio_is_valid(button->gpio)) { /* * Legacy GPIO number, so request the GPIO here and