__gpiod_get_optional   45 include/linux/gpio/consumer.h struct gpio_desc *__must_check __gpiod_get_optional(struct device *dev,
__gpiod_get_optional  303 include/linux/gpio/consumer.h 	__gpiod_get_optional(dev, con_id, flags)
__gpiod_get_optional  304 include/linux/gpio/consumer.h #define gpiod_get_optional(varargs...) __gpiod_get_optional(varargs, 0)