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 8f169c1d4..d07154f82 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
@@ -2669,11 +2669,24 @@ static void xhci_transfer ( struct xhci_host *xhci,
 			    			struct xhci_trb_transfer *trb ) {
 	struct xhci_slot *slot;
 	struct xhci_endpoint *endpoint;	
-	union xhci_trb *trans_trb = (void *)(uintptr_t)(trb->transfer);
-    struct xhci_ring *trans_ring = XHCI_RING(trans_trb); /* to align addr is ring base */
-	union xhci_trb *pending = &trans_ring->evt; /* preserve event trb pending to handle */
-    uint32_t eidx = trans_trb - trans_ring->ring + 1; /* calculate current evt trb index */	
-	int rc;
+    uintptr_t vir_addr;
+    union xhci_trb *trans_trb;
+    struct xhci_ring *trans_ring;
+    union xhci_trb *pending;
+    uint32_t eidx;
+    int rc;
+
+    vir_addr = usb_mem_page_phy2vir(trb->transfer);
+
+#if 0
+    if(!vir_addr)
+        return;
+#endif
+
+	trans_trb = (void *)(uintptr_t)(vir_addr);
+    trans_ring = XHCI_RING(trans_trb); /* to align addr is ring base */
+	pending = &trans_ring->evt; /* preserve event trb pending to handle */
+    eidx = trans_trb - trans_ring->ring + 1; /* calculate current evt trb index */	
 
 	/* Identify slot */
 	if ( ( trb->slot > xhci->slots ) ||