tweaks and logic fixes

linux/devices/GpsHyperionLinuxController.h

@@ -67,9 +67,8 @@ class GpsHyperionLinuxController : public ExtendedControllerBase {
   uint32_t timeIsConstantCounter = 0;
   Countdown timeUpdateCd = Countdown(60);
 
-  // Returns true if data was read and function should be called again
-  // immediately, and false if the gps_waiting blocked for 0.2 seconds
-  // without new data arriving.
+  // Returns true if the function should be called again or false if other
+  // controller handling can be done.
   bool readGpsDataFromGpsd();
 };