From b2a8dd18c00a6a66e7804673a556ff504119fccc Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Sun, 20 Sep 2015 16:43:44 +0200
Subject: [PATCH] Gyrosim: More verbose output

---
 src/platforms/posix/drivers/gyrosim/gyrosim.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/platforms/posix/drivers/gyrosim/gyrosim.cpp b/src/platforms/posix/drivers/gyrosim/gyrosim.cpp
index 50cc5091d8..cbe1dbef41 100644
--- a/src/platforms/posix/drivers/gyrosim/gyrosim.cpp
+++ b/src/platforms/posix/drivers/gyrosim/gyrosim.cpp
@@ -52,7 +52,6 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdlib.h>
-#include <semaphore.h>
 #include <string.h>
 #include <fcntl.h>
 #include <poll.h>
@@ -513,6 +512,7 @@ GYROSIM::transfer(uint8_t *send, uint8_t *recv, unsigned len)
 		// Get data from the simulator
 		Simulator *sim = Simulator::getInstance();
 		if (sim == NULL) {
+			PX4_WARN("failed accessing simulator");
 			return ENODEV;
 		}
 
@@ -531,6 +531,7 @@ GYROSIM::transfer(uint8_t *send, uint8_t *recv, unsigned len)
 		if (recv)
 			memcpy(&recv[1], &_regdata[reg-MPUREG_PRODUCT_ID], len-1);
 	}
+
 	return PX4_OK;
 }
 
@@ -767,8 +768,9 @@ GYROSIM::ioctl(device::file_t *filp, int cmd, unsigned long arg)
 					bool want_start = (_call_interval == 0);
 
 					/* if we need to start the poll state machine, do it */
-					if (want_start)
+					if (want_start) {
 						start();
+					}
 
 					return OK;
 				}