diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 5bd2100a4dcf6d4b1a41aeef16aee3ab6bc62c64..4c8d8efecdf41709d85bfc6f6e56fc0db9c8538d 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -1242,7 +1242,9 @@ static int fw_pm_notify(struct notifier_block *notify_block,
 #else
 static int fw_pm_notify(struct notifier_block *notify_block,
 			unsigned long mode, void *unused)
-{}
+{
+	return 0;
+}
 #endif
 
 static void __init fw_cache_init(void)