diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index b8d43bd9c71b..cc349f633570 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1028,8 +1028,8 @@ int hci_resume_dev(struct hci_dev *hdev);
 int hci_reset_dev(struct hci_dev *hdev);
 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
-void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
-void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
+__printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
+__printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
 int hci_dev_open(__u16 dev);
 int hci_dev_close(__u16 dev);
 int hci_dev_do_close(struct hci_dev *hdev);