Ensure bluetooth can be reloaded when hot plugging a bluetooth adapter (#75699)

homeassistant/components/bluetooth/__init__.py

@@ -440,5 +440,11 @@ class BluetoothManager:
             self._cancel_unavailable_tracking()
             self._cancel_unavailable_tracking = None
         if self.scanner:
-            await self.scanner.stop()
+            try:
+                await self.scanner.stop()
+            except BleakError as ex:
+                # This is not fatal, and they may want to reload
+                # the config entry to restart the scanner if they
+                # change the bluetooth dongle.
+                _LOGGER.error("Error stopping scanner: %s", ex)
         uninstall_multiple_bleak_catcher()

tests/components/bluetooth/test_init.py

@@ -1213,3 +1213,20 @@ async def test_getting_the_scanner_returns_the_wrapped_instance(hass, enable_blu
     """Test getting the scanner returns the wrapped instance."""
     scanner = bluetooth.async_get_scanner(hass)
     assert isinstance(scanner, models.HaBleakScannerWrapper)
+
+
+async def test_config_entry_can_be_reloaded_when_stop_raises(
+    hass, caplog, enable_bluetooth
+):
+    """Test we can reload if stopping the scanner raises."""
+    entry = hass.config_entries.async_entries(bluetooth.DOMAIN)[0]
+    assert entry.state == ConfigEntryState.LOADED
+
+    with patch(
+        "homeassistant.components.bluetooth.HaBleakScanner.stop", side_effect=BleakError
+    ):
+        await hass.config_entries.async_reload(entry.entry_id)
+        await hass.async_block_till_done()
+
+    assert entry.state == ConfigEntryState.LOADED
+    assert "Error stopping scanner" in caplog.text