ChangeLog, debugfs.c:
  When printing a usage message, have main return 1 (instead of not
  specifying a return value, bad!)

diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c
index 58ca557..311aa1b 100644
--- a/debugfs/debugfs.c
+++ b/debugfs/debugfs.c
@@ -1430,7 +1430,7 @@
 			break;
 		default:
 			com_err(argv[0], 0, usage);
-			return;
+			return 1;
 		}
 	}
 	if (optind < argc)