Bartosz Golaszewski c9c90711ee gpio: don't WARN() on NULL descs if gpiolib is disabled ... [ Upstream commit ffe0bbabb0 ] If gpiolib is disabled, we use the inline stubs from gpio/consumer.h instead of regular definitions of GPIO API. The stubs for 'optional' variants of gpiod_get routines return NULL in this case as if the relevant GPIO wasn't found. This is correct so far. Calling other (non-gpio_get) stubs from this header triggers a warning because the GPIO descriptor couldn't have been requested. The warning however is unconditional (WARN_ON(1)) and is emitted even if the passed descriptor pointer is NULL. We don't want to force the users of 'optional' gpio_get to check the returned pointer before calling e.g. gpiod_set_value() so let's only WARN on non-NULL descriptors. Cc: stable@vger.kernel.org Reported-by: Claus H. Stovgaard <cst@phaseone.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2019-09-16 08:22:22 +02:00
..
aspeed.h	gpio: aspeed: Add interfaces for co-processor to grab GPIOs	2018-07-02 16:10:15 +02:00
consumer.h	gpio: don't WARN() on NULL descs if gpiolib is disabled	2019-09-16 08:22:22 +02:00
driver.h	gpio: Assign gpio_irq_chip::parents to non-stack pointer	2018-10-10 14:03:27 +02:00
gpio-reg.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
machine.h	gpiolib: add hogs support for machine code	2018-05-16 14:35:24 +02:00