From 68d5f87889080614bce4bcb911398d1e03c98e99 Mon Sep 17 00:00:00 2001
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: Fri, 18 Sep 2015 11:45:22 +0200
Subject: [PATCH] cansequence: exit with failure in case of unknown option

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 cansequence.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cansequence.c b/cansequence.c
index 1e1af29..6fa3abb 100644
--- a/cansequence.c
+++ b/cansequence.c
@@ -281,7 +281,8 @@ int main(int argc, char **argv)
 			break;
 
 		default:
-			fprintf(stderr, "Unknown option %c\n", opt);
+			print_usage(basename(argv[0]));
+			exit(EXIT_FAILURE);
 			break;
 		}
 	}