Bugfix rpi_rf cleanup (#6513)

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homeassistant/components/switch/rpi_rf.py

@@ -8,8 +8,9 @@ import logging
 
 import voluptuous as vol
 
-from homeassistant.components.switch import (SwitchDevice, PLATFORM_SCHEMA)
-from homeassistant.const import (CONF_NAME, CONF_SWITCHES)
+from homeassistant.components.switch import SwitchDevice, PLATFORM_SCHEMA
+from homeassistant.const import (
+    CONF_NAME, CONF_SWITCHES, EVENT_HOMEASSISTANT_STOP)
 import homeassistant.helpers.config_validation as cv
 
 REQUIREMENTS = ['rpi-rf==0.9.6']
@@ -71,6 +72,9 @@ def setup_platform(hass, config, add_devices, discovery_info=None):
 
     add_devices(devices)
 
+    hass.bus.listen_once(
+        EVENT_HOMEASSISTANT_STOP, lambda event: rfdevice.cleanup())
+
 
 class RPiRFSwitch(SwitchDevice):
     """Representation of a GPIO RF switch."""