From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> References: <20200827185829.30096-1-krzk@kernel.org> Return-path: In-Reply-To: <20200827185829.30096-1-krzk@kernel.org> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: platform-driver-x86.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 -- 2.17.1