Fix FMU init

src/drivers/px4fmu/fmu.cpp

@@ -405,15 +405,15 @@ PX4FMU::init()
 		return ret;
 	}
 
-	if (_mode != MODE_NONE) {
-		/* try to claim the generic PWM output device node as well - it's OK if we fail at this */
-		_class_instance = register_class_devname(PWM_OUTPUT_BASE_DEVICE_PATH);
+	// XXX best would be to register / de-register the device depending on modes
 
-		if (_class_instance == CLASS_DEVICE_PRIMARY) {
-			/* lets not be too verbose */
-		} else if (_class_instance < 0) {
-			warnx("FAILED registering class device");
-		}
+	/* try to claim the generic PWM output device node as well - it's OK if we fail at this */
+	_class_instance = register_class_devname(PWM_OUTPUT_BASE_DEVICE_PATH);
+
+	if (_class_instance == CLASS_DEVICE_PRIMARY) {
+		/* lets not be too verbose */
+	} else if (_class_instance < 0) {
+		warnx("FAILED registering class device");
 	}
 
 	_safety_disabled = circuit_breaker_enabled("CBRK_IO_SAFETY", CBRK_IO_SAFETY_KEY);