diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 2a651a4d60e6..74e2b04c84b2 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -5673,7 +5673,9 @@ int hci_dev_close_sync(struct hci_dev *hdev)
 	memset(hdev->eir, 0, sizeof(hdev->eir));
 	memset(hdev->dev_class, 0, sizeof(hdev->dev_class));
 	bacpy(&hdev->random_addr, BDADDR_ANY);
+	hci_dev_lock(hdev);
 	hci_codec_list_clear(&hdev->local_codecs);
+	hci_dev_unlock(hdev);
 
 	hci_dev_put(hdev);
 	return err;