Respect disable_new_entities for new device_tracker entities (#68148)

homeassistant/components/device_tracker/config_entry.py

@@ -149,9 +149,19 @@ def _async_register_mac(
             return
 
         # Make sure entity has a config entry and was disabled by the
-        # default disable logic in the integration.
+        # default disable logic in the integration and new entities
+        # are allowed to be added.
         if (
             entity_entry.config_entry_id is None
+            or (
+                (
+                    config_entry := hass.config_entries.async_get_entry(
+                        entity_entry.config_entry_id
+                    )
+                )
+                is not None
+                and config_entry.pref_disable_new_entities
+            )
             or entity_entry.disabled_by != er.RegistryEntryDisabler.INTEGRATION
         ):
             return

tests/components/device_tracker/test_config_entry.py

@@ -137,6 +137,39 @@ async def test_register_mac(hass):
     assert entity_entry_1.disabled_by is None
 
 
+async def test_register_mac_ignored(hass):
+    """Test ignoring registering a mac."""
+    dev_reg = dr.async_get(hass)
+    ent_reg = er.async_get(hass)
+
+    config_entry = MockConfigEntry(domain="test", pref_disable_new_entities=True)
+    config_entry.add_to_hass(hass)
+
+    mac1 = "12:34:56:AB:CD:EF"
+
+    entity_entry_1 = ent_reg.async_get_or_create(
+        "device_tracker",
+        "test",
+        mac1 + "yo1",
+        original_name="name 1",
+        config_entry=config_entry,
+        disabled_by=er.RegistryEntryDisabler.INTEGRATION,
+    )
+
+    ce._async_register_mac(hass, "test", mac1, mac1 + "yo1")
+
+    dev_reg.async_get_or_create(
+        config_entry_id=config_entry.entry_id,
+        connections={(dr.CONNECTION_NETWORK_MAC, mac1)},
+    )
+
+    await hass.async_block_till_done()
+
+    entity_entry_1 = ent_reg.async_get(entity_entry_1.entity_id)
+
+    assert entity_entry_1.disabled_by == er.RegistryEntryDisabler.INTEGRATION
+
+
 async def test_connected_device_registered(hass):
     """Test dispatch on connected device being registered."""