add error handling on usb related modules.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9566 6f19259b-4bc3-4df7-8a09-765794883524
2009-12-16 00:58:46 +00:00
parent 7748eb28e1
commit efe9186f09
8 changed files with 90 additions and 16 deletions
--- a/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
+++ b/MdeModulePkg/Bus/Pci/EhciDxe/Ehci.c
@@ -1884,6 +1884,12 @@ EhcDriverBindingStop (
    FreeUnicodeStringTable (Ehc->ControllerNameTable);
  }

+  //
+  // Disable routing of all ports to EHCI controller, so all ports are 
+  // routed back to the UHCI controller.
+  //
+  EhcClearOpRegBit (Ehc, EHC_CONFIG_FLAG_OFFSET, CONFIGFLAG_ROUTE_EHC);
+
  //
  // Restore original PCI attributes
  //