From 875be65242dc58503c44ff522372b3cc2df83619 Mon Sep 17 00:00:00 2001
From: Lorenz Meier <lm@inf.ethz.ch>
Date: Tue, 8 Jul 2014 13:52:28 +0200
Subject: [PATCH] MPU6000: Fix usage function call to fit existing structure.

---
 src/drivers/mpu6000/mpu6000.cpp | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/drivers/mpu6000/mpu6000.cpp b/src/drivers/mpu6000/mpu6000.cpp
index f6e00feeef..5668b0865f 100644
--- a/src/drivers/mpu6000/mpu6000.cpp
+++ b/src/drivers/mpu6000/mpu6000.cpp
@@ -1433,6 +1433,7 @@ void	start(bool, enum Rotation);
 void	test(bool);
 void	reset(bool);
 void	info(bool);
+void	usage();
 
 /**
  * Start the driver.
@@ -1604,17 +1605,17 @@ info(bool external_bus)
 	exit(0);
 }
 
-
-} // namespace
-
 void
-mpu6000_usage()
+usage()
 {
 	warnx("missing command: try 'start', 'info', 'test', 'reset'");
 	warnx("options:");
 	warnx("    -X    (external bus)");
+	warnx("    -R rotation");
 }
 
+} // namespace
+
 int
 mpu6000_main(int argc, char *argv[])
 {
@@ -1632,7 +1633,7 @@ mpu6000_main(int argc, char *argv[])
 			rotation = (enum Rotation)atoi(optarg);
 			break;
 		default:
-			mpu6000_usage();
+			mpu6000::usage();
 			exit(0);
 		}
 	}