__devm_gpiod_get_optional 61 include/linux/gpio/consumer.h struct gpio_desc *__must_check __devm_gpiod_get_optional(struct device *dev, __devm_gpiod_get_optional 316 include/linux/gpio/consumer.h __devm_gpiod_get_optional(dev, con_id, flags) __devm_gpiod_get_optional 318 include/linux/gpio/consumer.h __devm_gpiod_get_optional(varargs, 0)