Output an error message when no interface is specified

Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
2012-03-27 11:50:54 +02:00 · 2012-03-27 11:50:54 +02:00 · d5f953fed9
parent 04e59b0b27
commit d5f953fed9
1 changed files with 1 additions and 0 deletions
--- a/ptp4l.c
+++ b/ptp4l.c
@ -151,6 +151,7 @@ int main(int argc, char *argv[])
 	}

 	if (!nports) {
+		fprintf(stderr, "no interface specified\n");
 		usage(progname);
 		return -1;
 	}