Index: uspace/drv/bus/usb/xhci/hw_struct/regs.h
===================================================================
--- uspace/drv/bus/usb/xhci/hw_struct/regs.h	(revision cded246f1378cf5874361916beb059e404df44f3)
+++ uspace/drv/bus/usb/xhci/hw_struct/regs.h	(revision a06fd64032f04d90ea9522e695c22b49ca90838b)
@@ -461,4 +461,7 @@
 #define XHCI_INTR_ERSTBA_LO  erstba_lo, 32, FIELD
 #define XHCI_INTR_ERSTBA_HI  erstba_hi, 32, FIELD
+#define XHCI_INTR_ERDP_ESI     erdp_lo, 32, RANGE,  2, 0
+#define XHCI_INTR_ERDP_EHB     erdp_lo, 32,  FLAG,  3
+// TODO: ERDP_LO is supposed to be RANGE 31, 4 (section 5.5.2.3.3).
 #define XHCI_INTR_ERDP_LO      erdp_lo, 32, FIELD
 #define XHCI_INTR_ERDP_HI      erdp_hi, 32, FIELD