tools/ppsi_conf: print help if no option provided

Also allow to run without running PPSi.

Signed-off-by: Adam Wujek <dev_public@wujek.eu>

tools/ppsi_conf.c

@@ -152,7 +152,9 @@ int main(int argc, char *argv[])
 	int ppsi_instance = -1;
 	int ppsi_port = -1;
 
-	init_shm();
+	/* If no params print help */
+	if (argc == 1)
+		help(argv[0]);
 
 	while ((opt = getopt_long(argc, argv, "vh", long_opts, NULL)) != -1) {
 		if (opt == 'h' || opt == arg_help )
@@ -178,6 +180,7 @@ int main(int argc, char *argv[])
 		}
 	}
 
+	init_shm();
 
 	/* Reset position of argument for getopt_long */
 	optind = 0;