Index: uspace/drv/infrastructure/root/root.c
===================================================================
--- uspace/drv/infrastructure/root/root.c	(revision 3e6a98c595287c43d200d28d97f57755342be117)
+++ uspace/drv/infrastructure/root/root.c	(revision 7ed6ee29cb8dd4663fd55121d7717fd74c8cc0be)
@@ -208,11 +208,13 @@
 	/*
 	 * Register virtual devices root.
-	 * We ignore error occurrence because virtual devices shall not be
+	 * We warn on error occurrence because virtual devices shall not be
 	 * vital for the system.
 	 */
-	(void) add_virtual_root_fun(dev);
+	int res = add_virtual_root_fun(dev);
+	if (res != EOK)
+		ddf_msg(LVL_WARN, "Failed to add virtual child.");
 
 	/* Register root device's children. */
-	int res = add_platform_fun(dev);
+	res = add_platform_fun(dev);
 	if (EOK != res)
 		ddf_msg(LVL_ERROR, "Failed adding child device for platform.");