Dmitry Torokhov 22c403676d gpio: return NULL from gpiod_get_optional when GPIOLIB is disabled ... Given the intent behind gpiod_get_optional() and friends it does not make sense to return -ENOSYS when GPIOLIB is disabled: the driver is expected to work just fine without gpio so let's behave as if gpio was not found. Otherwise we have to special-case -ENOSYS in drivers. Note that there was objection that someone might forget to enable GPIOLIB when dealing with a platform that has device that actually specifies optional gpio and we'll break it. I find this unconvincing as that would have to be the *only GPIO* in the system, which is extremely unlikely. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>		2017-03-15 11:16:30 +01:00
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00-INDEX	gpio: document interaction with other subsystems	2015-07-21 11:39:32 +02:00
board.txt	gpio/board.txt: point to gpiod_set_value	2016-10-20 14:14:11 +02:00
consumer.txt	gpio: return NULL from gpiod_get_optional when GPIOLIB is disabled	2017-03-15 11:16:30 +01:00
driver.txt	gpio: random documentation update	2017-01-31 15:43:05 +01:00
drivers-on-gpio.txt	gpio: Fix paths to GPIO driver source files	2016-06-13 09:30:31 +02:00
gpio-legacy.txt	gpio: delete ARCH_[WANTS_OPTIONAL|REQUIRE]_GPIOLIB	2016-08-08 09:50:00 +02:00
gpio.txt	Documentation: gpiolib: document new interface	2013-11-25 09:02:30 +01:00
sysfs.txt	Typo correction for description in gpio document.	2015-10-11 15:39:01 -06:00