--- zzzz-none-000/linux-4.4.60/drivers/firmware/psci.c	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/drivers/firmware/psci.c	2021-02-04 17:41:59.000000000 +0000
@@ -439,7 +439,7 @@
 
 	np = of_find_matching_node_and_match(NULL, psci_of_match, &matched_np);
 
-	if (!np)
+	if (!np || !of_device_is_available(np))
 		return -ENODEV;
 
 	init_fn = (psci_initcall_t)matched_np->data;