--- src/sys/sys/chio.h	2006/05/20 02:42:13	1.3
+++ src/sys/sys/chio.h	2007/11/25 17:59:22	1.4
@@ -55,6 +55,7 @@
 #define CHET_ST		1	/* storage transport (slot) */
 #define CHET_IE		2	/* import/export (portal) */
 #define CHET_DT		3	/* data transfer (drive) */
+#define CHET_MAX	CHET_DT
 
 /*
  * Maximum length of a volume identification string