diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index f86dd97..e7765ed 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2319,6 +2319,7 @@
 
 	init_waitqueue_head(&hdev->debug_wait);
 	INIT_LIST_HEAD(&hdev->debug_list);
+	mutex_init(&hdev->debug_list_lock);
 	sema_init(&hdev->driver_lock, 1);
 
 	return hdev;