diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index 191bc6925120..2b7c80043aa2 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -437,6 +437,7 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb)
 }
 EXPORT_SYMBOL_GPL(btmtk_process_coredump);
 
+#if IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK)
 static void btmtk_usb_wmt_recv(struct urb *urb)
 {
 	struct hci_dev *hdev = urb->context;
@@ -1488,6 +1489,7 @@ int btmtk_usb_shutdown(struct hci_dev *hdev)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(btmtk_usb_shutdown);
+#endif
 
 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
 MODULE_AUTHOR("Mark Chen <mark-yw.chen@mediatek.com>");
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index 5df7c3296624..6fc69cd8636b 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -202,6 +202,7 @@ int btmtk_process_coredump(struct hci_dev *hdev, struct sk_buff *skb);
 void btmtk_fw_get_filename(char *buf, size_t size, u32 dev_id, u32 fw_ver,
 			   u32 fw_flavor);
 
+#if IS_ENABLED(CONFIG_BT_HCIBTUSB_MTK)
 int btmtk_usb_subsys_reset(struct hci_dev *hdev, u32 dev_id);
 
 int btmtk_usb_recv_acl(struct hci_dev *hdev, struct sk_buff *skb);
@@ -216,6 +217,7 @@ int btmtk_usb_suspend(struct hci_dev *hdev);
 int btmtk_usb_setup(struct hci_dev *hdev);
 
 int btmtk_usb_shutdown(struct hci_dev *hdev);
+#endif
 #else
 
 static inline int btmtk_set_bdaddr(struct hci_dev *hdev,