diff --git a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
index bcb0815a3..4786c6c83 100644
--- a/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
+++ b/Ubiquitous/XiZi_AIoT/services/drivers/usb/components/port/xhci/xhci.c
@@ -2944,3 +2944,28 @@ void xhci_event_process(struct xhci_host *xhci) {
 
    return;    
 }
+
+
+/* Dump Port status */
+void xhci_dump_port_status(uint32_t port, uint32_t portsc) {
+}
+
+/* Dump input context */
+void xhci_dump_input_ctx( struct xhci_host *xhci, const struct xhci_endpoint *endpoint, const void *input) {
+}
+
+/* Dump Endpoint */
+void xhci_dump_endpoint(const struct xhci_endpoint *ep) {
+}
+
+/* Dump endpoint context */
+void xhci_dump_ep_ctx(const struct xhci_endpoint_context *ep) {
+}
+
+/* Dump TRB */
+void xhci_dump_trbs(const union xhci_trb *trbs, unsigned int count) {
+}
+
+/* Dump slot context */
+void xhci_dump_slot_ctx(const struct xhci_slot_context *const sc) {
+}