diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c
index 7d2e49f..68953cc 100644
--- a/drivers/firmware/psci.c
+++ b/drivers/firmware/psci.c
@@ -19,6 +19,7 @@
 #include <linux/errno.h>
 #include <linux/printk.h>
 #include <linux/psci.h>
+#include <asm/system.h>
 
 #define DRIVER_NAME "psci"
 
@@ -73,6 +74,11 @@
 {
 	const char *method;
 
+#if defined(CONFIG_ARM64)
+	if (current_el() == 3)
+		return -EINVAL;
+#endif
+
 	method = ofnode_read_string(dev_ofnode(dev), "method");
 	if (!method) {
 		pr_warn("missing \"method\" property\n");