$OpenBSD: patch-drivers_blazer_usb_c,v 1.5 2012/08/09 12:05:16 sthen Exp $
--- drivers/blazer_usb.c.orig	Tue Jul 31 18:38:59 2012
+++ drivers/blazer_usb.c	Thu Aug  9 01:35:52 2012
@@ -439,7 +439,9 @@ int blazer_command(const char *cmd, char *buf, size_t 
 
 	case -ETIMEDOUT:	/* Connection timed out */
 	case -EOVERFLOW:	/* Value too large for defined data type */
+#ifdef EPROTO
 	case -EPROTO:		/* Protocol error */
+#endif
 	default:
 		break;
 	}
