[PATCH] gpio: Add simple poweroff-gpio driver

+	if (gpio_request(gpio_num, "poweroff-gpio")) {
+		pr_err("%s: Could not get GPIO %d", __func__, gpio_num);
+		return -ENODEV;
+	}
+	if (gpio_direction_output(gpio_num, gpio_active_low)) {
+		pr_err("%s: Could not set direction of GPIO %d",
+		       __func__, gpio_num);
+		return -ENODEV;
+	}

On error, you are missing a gpio_free().

   Andrew