Empty button events at start of loop

selfdrive/car/gm/carstate.py

@@ -33,6 +33,7 @@ class CarState(CarStateBase):
     self.prev_lkas_enabled = False
 
   def update(self, pt_cp, cam_cp, loopback_cp):
+    self.button_events = []
     ret = car.CarState.new_message()
 
     self.prev_cruise_buttons = self.cruise_buttons

selfdrive/car/honda/carstate.py

@@ -111,6 +111,7 @@ class CarState(CarStateBase):
     self.dash_speed_seen = False
 
   def update(self, cp, cp_cam, cp_body):
+    self.button_events = []
     ret = car.CarState.new_message()
 
     # car params

selfdrive/car/hyundai/carstate.py

@@ -63,6 +63,7 @@ class CarState(CarStateBase):
     self._speed_limit_clu = 0
 
   def update(self, cp, cp_cam):
+    self.button_events = []
     if self.CP.carFingerprint in CANFD_CAR:
       return self.update_canfd(cp, cp_cam)
 

selfdrive/car/nissan/carstate.py

@@ -24,6 +24,7 @@ class CarState(CarStateBase):
     self.distance_button = 0
 
   def update(self, cp, cp_adas, cp_cam):
+    self.button_events = []
     ret = car.CarState.new_message()
 
     self.prev_distance_button = self.distance_button

selfdrive/car/subaru/carstate.py

@@ -20,6 +20,7 @@ class CarState(CarStateBase):
     self.prev_lkas_enabled = None
 
   def update(self, cp, cp_cam, cp_body):
+    self.button_events = []
     ret = car.CarState.new_message()
 
     self.prev_mads_enabled = self.mads_enabled

selfdrive/car/toyota/carstate.py

@@ -85,6 +85,7 @@ class CarState(CarStateBase):
     self.frame = 0
 
   def update(self, cp, cp_cam):
+    self.button_events = []
     ret = car.CarState.new_message()
 
     self.prev_mads_enabled = self.mads_enabled