Fix a bug that usb keybarod can not work well when it is inserted at a usb 2.0 hub.

[mirror_edk2.git] / MdeModulePkg / Bus / Pci / UhciDxe / Uhci.h

diff --git a/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h b/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h
index c2377bf3a7980cbf4d4a2afe1dcc8bccbb1c2f75..096af248029cccc79b7a7ff0ed02dae610daaa58 100644 (file)
--- a/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h
+++ b/MdeModulePkg/Bus/Pci/UhciDxe/Uhci.h
@@ -117,8 +117,8 @@ struct _USB_HC_DEV {
   //\r
   // Schedule data structures\r
   //\r
-  UINT32                    *FrameBase;\r
-  UINT32                    *FrameBasePciMemAddr;\r
+  UINT32                    *FrameBase; // the buffer pointed by this pointer is used to store pci bus address of the QH descriptor.\r
+  UINT32                    *FrameBaseHostAddr; // the buffer pointed by this pointer is used to store host memory address of the QH descriptor.\r
   UHCI_QH_SW                *SyncIntQh;\r
   UHCI_QH_SW                *CtrlQh;\r
   UHCI_QH_SW                *BulkQh;\r