$OpenBSD: patch-drivers_blazer_usb_c,v 1.6 2014/01/07 21:55:54 sthen Exp $
--- drivers/blazer_usb.c.orig	Sun Nov 17 19:27:38 2013
+++ drivers/blazer_usb.c	Thu Nov 21 22:08:48 2013
@@ -443,7 +443,9 @@ 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;
 	}
