call once

Author: deanlee

selfdrive/car/interfaces.py

@@ -218,9 +218,10 @@ def _update(self, c: car.CarControl) -> car.CarState:
 
   def update(self, c: car.CarControl, can_strings: list[bytes]) -> car.CarState:
     # parse can
+    can_list = can_capnp_to_list(can_strings)
     for cp in self.can_parsers:
       if cp is not None:
-        cp.update_strings(can_capnp_to_list(can_strings))
+        cp.update_strings(can_list)
 
     # get CarState
     ret = self._update(c)