diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 2d75ffb42f7d800e128e0f9bed733433da13bbc4..2ab78bfc108ee91b66e03e7a2dd7550671bb2af6 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -795,6 +795,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	hdev->flags = 0;
 
 	memset(hdev->eir, 0, sizeof(hdev->eir));
+	memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
 
 	hci_req_unlock(hdev);