diff --git a/target/linux/mediatek/files-5.4/drivers/usb/host/xhci-mtk-test.h b/target/linux/mediatek/files-5.4/drivers/usb/host/xhci-mtk-test.h
index 83e1542..7f76d29 100644
--- a/target/linux/mediatek/files-5.4/drivers/usb/host/xhci-mtk-test.h
+++ b/target/linux/mediatek/files-5.4/drivers/usb/host/xhci-mtk-test.h
@@ -15,6 +15,8 @@
 #ifdef CONFIG_USB_XHCI_MTK_DEBUGFS
 int hqa_create_attr(struct device *dev);
 void hqa_remove_attr(struct device *dev);
+void ssusb_remap_ip_regs(struct device *dev);
+
 #else
 static inline int hqa_create_attr(struct device *dev)
 {
@@ -23,5 +25,8 @@
 static inline void hqa_remove_attr(struct device *dev)
 {
 }
+static inline void ssusb_remap_ip_regs(struct device *dev)
+{
+}
 #endif
 #endif /* __XHCI_MTK_TEST_H */