D50868.diff
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	diff --git a/sys/dev/gpio/gpiobus.c b/sys/dev/gpio/gpiobus.c
	--- a/sys/dev/gpio/gpiobus.c
	+++ b/sys/dev/gpio/gpiobus.c
	@@ -218,15 +218,13 @@
	{
	device_t busdev;

	- if (gpio == NULL)
	- return;
	-
	+ KASSERT(gpio != NULL, ("GPIO pin is NULL."));
	KASSERT(gpio->dev != NULL, ("GPIO pin device is NULL."));

	busdev = GPIO_GET_BUS(gpio->dev);
	- if (busdev != NULL)
	- gpiobus_release_pin(busdev, gpio->pin);
	+ KASSERT(busdev != NULL, ("gpiobus dev is NULL."));

	+ gpiobus_release_pin(busdev, gpio->pin);
	free(gpio, M_DEVBUF);
	}