Index: uspace/drv/bus/usb/xhci/hw_struct/context.h
===================================================================
--- uspace/drv/bus/usb/xhci/hw_struct/context.h	(revision f971e957f3d5889a37d9c43b655cdd5c637dd670)
+++ uspace/drv/bus/usb/xhci/hw_struct/context.h	(revision bb784ae40ffd2eb0cda12cf5cc8254d941590b46)
@@ -74,4 +74,6 @@
 #define XHCI_EP_DCS_SET(ctx, val) \
 	xhci_qword_set_bits(&(ctx).data2, val, 0, 0)
+#define XHCI_EP_MAX_ESIT_PAYLOAD_LO_SET(ctx, val) \
+	xhci_dword_set_bits(&(ctx).data3, val, 31, 16)
 #define XHCI_EP_INTERVAL_SET(ctx, val) \
 	xhci_dword_set_bits(&(ctx).data[0], val, 23, 16)
@@ -97,4 +99,6 @@
 #define XHCI_EP_DCS(ctx)                XHCI_QWORD_EXTRACT((ctx).data2,  0,  0)
 #define XHCI_EP_TR_DPTR(ctx)            XHCI_QWORD_EXTRACT((ctx).data2, 63,  4)
+
+#define XHCI_EP_MAX_ESIT_PAYLOAD_LO(ctx) XHCI_DWORD_EXTRACT((ctx).data3, 31,  16)
 
 } __attribute__((packed)) xhci_ep_ctx_t;