Do not request unsupported modules after the initial update (#298)

* Do not request unsupported modules after the initial update

* debugify logging

kasa/modules/module.py

@@ -1,5 +1,6 @@
 """Base class for all module implementations."""
 import collections
+import logging
 from abc import ABC, abstractmethod
 from typing import TYPE_CHECKING
 
@@ -7,6 +8,9 @@ if TYPE_CHECKING:
     from kasa import SmartDevice
 
 
+_LOGGER = logging.getLogger(__name__)
+
+
 # TODO: This is used for query construcing
 def merge(d, u):
     """Update dict recursively."""
@@ -45,6 +49,10 @@ class Module(ABC):
     @property
     def is_supported(self) -> bool:
         """Return whether the module is supported by the device."""
+        if self._module not in self._device._last_update:
+            _LOGGER.debug("Initial update, so consider supported: %s", self._module)
+            return True
+
         return "err_code" not in self.data
 
     def call(self, method, params=None):