[Description]:

Sync 3 trackers.
 1. A bug that may cause the low/full speed device behind 2.0 hub will not work.
 2. MajorRevision and MinorRevision need updating.
 3. Misuse UhciConvertPollRate in UHCI driver.
[Impaction]:
 EhicDxe, UhciDxe and UsbBusDxe.
[Reference Info]:
 EDK tracker 1122 - A bug that may cause the low/full speed device behind 2.0 hub will not work .
 EDK tracker 1101 - Phoenix found issue in USB and Misuse UhciConvertPollRate in UHCI driver.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5370 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Bus/Pci/UhciDxe/Uhci.c

@@ -1,6 +1,6 @@
 /** @file
 
-Copyright (c) 2004 - 2007, Intel Corporation
+Copyright (c) 2004 - 2008, Intel Corporation
 All rights reserved. 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
@@ -313,9 +313,10 @@ Uhci2GetCapability (
     // returns 0 in this bit if port number is invalid. Also, if
     // PciIo IoRead returns error, 0xFFFF is returned to caller.
     //
-    if (((PortSC & 0x80) != 0) && (PortSC != 0xFFFF)) {
-      (*PortNumber)++;
+    if (((PortSC & 0x80) == 0) || (PortSC == 0xFFFF)) {
+      break;
     }
+    (*PortNumber)++;
   }
 
   Uhc->RootPorts = *PortNumber;