--- src/sys/dev/misc/cmx/cmx.c	2008/04/23 08:57:10	1.1
+++ src/sys/dev/misc/cmx/cmx.c	2008/08/08 18:33:11	1.2
@@ -284,10 +284,10 @@ cmx_detach(device_t dev)
 	}
 
 	wakeup(sc);
-	destroy_dev(sc->cdev);
-
 	DEBUG_printf(dev, "releasing resources\n");
 	cmx_release_resources(dev);
+	dev_ops_remove(&cmx_ops, -1, device_get_unit(dev));
+
 	return 0;
 }