Fixed bug 4391 - hid_enumerate() sometimes causes game to freeze for a few seconds

Daniel Gibson

Even though my game (dhewm3) doesn't use SDL_INIT_JOYSTICK, SDL_PumpEvent() calls SDL_JoystickUpdate() which ends up calling hid_enumerate() every three seconds, and sometimes on my Win7 box hid_enumerate() takes about 5 seconds, which causes the whole game to freeze for that time.

src/sensor/SDL_sensor.c

@@ -505,6 +505,10 @@ SDL_SensorUpdate(void)
     int i;
     SDL_Sensor *sensor;
 
+    if (!SDL_WasInit(SDL_INIT_SENSOR)) {
+        return;
+    }
+
     SDL_LockSensors();
 
     if (SDL_updating_sensor) {