--- setserial.c
+++ setserial.c
@@ -412,7 +412,7 @@
 }
 #endif
 
-void get_serial(char *device)
+int get_serial(char *device)
 {
 	struct serial_struct serinfo;
 	int	fd;
@@ -420,13 +420,13 @@
 
 	if ((fd = open(device, O_RDWR|O_NONBLOCK)) < 0) {
 		perror(device);
-		return;
+		return 1;
 	}
 	serinfo.reserved_char[0] = 0;
 	if (ioctl(fd, TIOCGSERIAL, &serinfo) < 0) {
 		perror("Cannot get serial info");
 		close(fd);
-		return;
+		return 1;
 	}
 	if (serinfo.irq == 9)
 		serinfo.irq = 2;	/* People understand 2 better than 9 */
@@ -472,16 +472,18 @@
 		printf("\n");
 	}
 	close(fd);
+	
+	return 0;
 }
 
-void set_serial(char *device, char ** arg)
+int set_serial(char *device, char ** arg)
 {
 	struct serial_struct old_serinfo, new_serinfo;
 	struct	flag_type_table	*p;
 	int	fd;
 	int	do_invert = 0;
 	char	*word;
-	
+	int	e = 0;
 
 	if ((fd = open(device, O_RDWR|O_NONBLOCK)) < 0) {
 		if (verbosity==0 && errno==ENOENT)
@@ -614,7 +616,9 @@
 	}
 	close(fd);
 	if (verbose_flag)
-		get_serial(device);
+		e = get_serial(device);
+	
+	return e;
 }
 
 void do_wild_intr(char *device)
@@ -718,6 +722,7 @@
 {
 	int	get_flag = 0, wild_intr_flag = 0;
 	int	c;
+	int e = 0;
 	extern int optind;
 	extern char *optarg;
 	
@@ -760,8 +765,8 @@
 	if (get_flag) {
 		argv += optind;
 		while (*argv)
-			get_serial(*argv++);
-		exit(0);
+			e |= get_serial(*argv++);
+		exit(e);
 	}
 	if (argc == optind)
 		usage();
@@ -770,9 +775,9 @@
 		exit(0);
 	}
 	if (argc-optind == 1)
-		get_serial(argv[optind]);
+		e = get_serial(argv[optind]);
 	else
-		set_serial(argv[optind], argv+optind+1);
-	exit(0);
+		e = set_serial(argv[optind], argv+optind+1);
+	exit(e);
 }