Bartosz Golaszewski ffe0bbabb0 gpio: don't WARN() on NULL descs if gpiolib is disabled ... 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>		2019-07-28 12:44:14 +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	2019-07-28 12:44:14 +02:00
driver.h	This is the bulk of pin control changes for the v5.3 kernel	2019-07-13 15:02:27 -07:00
gpio-reg.h	gpio: Add comments on #if/#else/#endif	2019-06-27 15:56:50 +01:00
machine.h	gpio: Add comments on #if/#else/#endif	2019-06-27 15:56:50 +01:00