Existing code forgot to set Descriptor->SpecificFlag to 0 when
the resource type is non-prefetchable MMIO.
The patch adds the missing assignment.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <[email protected]>
Cc: Eric Dong <[email protected]>
---
 MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c 
b/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
index 70726a6be8..1494848c3e 100644
--- a/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
+++ b/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
@@ -2,7 +2,7 @@
 
   Provides the basic interfaces to abstract a PCI Host Bridge Resource 
Allocation.
 
-Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 1999 - 2017, 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
@@ -574,7 +574,8 @@ ResourceConflict (
       Descriptor->Len = sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) - 3;
       Descriptor->AddrRangeMin = ResAllocNode->Base;
       Descriptor->AddrRangeMax = ResAllocNode->Alignment;
-      Descriptor->AddrLen = ResAllocNode->Length;
+      Descriptor->AddrLen      = ResAllocNode->Length;
+      Descriptor->SpecificFlag = 0;
       switch (ResAllocNode->Type) {
 
       case TypeIo:
-- 
2.12.2.windows.2

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