Avoid creating tasks to shutdown entity platforms (#111026)

* Avoid creating tasks to shutdown entity platforms

Nothing needed to be awaited here

* fix mocking

* missed one test

homeassistant/helpers/entity_component.py

@@ -5,7 +5,6 @@ import asyncio
 from collections.abc import Callable, Iterable
 from datetime import timedelta
 from functools import partial
-from itertools import chain
 import logging
 from types import ModuleType
 from typing import Any, Generic
@@ -394,8 +393,8 @@ class EntityComponent(Generic[_EntityT]):
         entity_platform.async_prepare()
         return entity_platform
 
-    async def _async_shutdown(self, event: Event) -> None:
+    @callback
+    def _async_shutdown(self, event: Event) -> None:
         """Call when Home Assistant is stopping."""
-        await asyncio.gather(
+        for platform in self._platforms.values():
-            *(platform.async_shutdown() for platform in chain(self._platforms.values()))
+            platform.async_shutdown()
-        )

homeassistant/helpers/entity_platform.py

@@ -284,7 +284,8 @@ class EntityPlatform:
 
         await self._async_setup_platform(async_create_setup_task)
 
-    async def async_shutdown(self) -> None:
+    @callback
+    def async_shutdown(self) -> None:
         """Call when Home Assistant is stopping."""
         self.async_cancel_retry_setup()
         self.async_unsub_polling()

tests/common.py

@@ -885,8 +885,9 @@ class MockEntityPlatform(entity_platform.EntityPlatform):
             entity_namespace=entity_namespace,
         )
 
-        async def _async_on_stop(_: Event) -> None:
+        @callback
-            await self.async_shutdown()
+        def _async_on_stop(_: Event) -> None:
+            self.async_shutdown()
 
         hass.bus.async_listen_once(EVENT_HOMEASSISTANT_STOP, _async_on_stop)
 

tests/helpers/test_entity_platform.py

@@ -979,7 +979,7 @@ async def test_stop_shutdown_cancels_retry_setup_and_interval_listener(
     assert len(mock_call_later.return_value.mock_calls) == 0
     assert ent_platform._async_cancel_retry_setup is not None
 
-    await ent_platform.async_shutdown()
+    ent_platform.async_shutdown()
 
     assert len(mock_call_later.return_value.mock_calls) == 1
     assert ent_platform._async_unsub_polling is None