From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre Courbot Subject: [PATCH 0/2] More precise error reporting for of_get_named_gpio Date: Fri, 29 Jun 2012 13:57:57 +0900 Message-ID: <1340945879-11712-1-git-send-email-acourbot@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Grant Likely , Linus Walleij Cc: linux-kernel@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, Alexandre Courbot List-Id: devicetree@vger.kernel.org of_get_named_gpio is a very convenient way to get a GPIO from a device tree. However it makes no difference between an invalid property or the absence of it and returns -EINVAL in both cases. Sometimes a GPIO property can be optional, and so far we need to use a separate call to e.g. of_get_property. These two patches make it possible to differenciate both cases by having of_parse_phandle_with_args return -ENOENT instead of -EINVAL if the requested property does not exist, and of_get_named_gpio_flags propage the return value of of_parse_phandle_with_args instead of invariably returning -EINVAL/ Alexandre Courbot (2): of: return -ENOENT when no property gpio: propagate of_parse_phandle_with_args errors drivers/gpio/gpiolib-of.c | 2 +- drivers/of/base.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) -- 1.7.11.1