X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FBus%2FPci%2FXhciDxe%2FXhci.h;h=ada961f61133150cce265023275d4fdf0d1526e5;hp=ae56b1e6fe49c06ff2ab5d7cd8bd99f20eb6bd97;hb=ca243131657ba03f58206a417b938aa14cff585c;hpb=22feb630eb1bbe975c4c14ff859156dcbf6f87e3

diff --git a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h
index ae56b1e6fe..ada961f611 100644
--- a/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h
+++ b/MdeModulePkg/Bus/Pci/XhciDxe/Xhci.h
@@ -2,7 +2,7 @@
 
   Provides some data structure definitions used by the XHCI host controller driver.
 
-Copyright (c) 2011 - 2012, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2011 - 2013, Intel Corporation. All rights reserved.<BR>
 This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -41,6 +41,10 @@ typedef struct _USB_DEV_CONTEXT      USB_DEV_CONTEXT;
 #include "XhciSched.h"
 #include "ComponentName.h"
 
+//
+// The unit is microsecond, setting it as 1us.
+//
+#define XHC_1_MICROSECOND            (1)
 //
 // Convert millisecond to microsecond.
 //