X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FBus%2FPci%2FPciHostBridgeDxe%2FPciRootBridgeIo.c;h=8e4f03277245f6bb94902acf83005da92ed70426;hp=a0e7e5b6f2551fd47f7e4e18425422d0e8e628d2;hb=8df95dd04f467c5626850b34dec564dec918c47d;hpb=4275f38507a4a44260555495dfb6da1d8a307307

diff --git a/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c b/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c
index a0e7e5b6f2..8e4f032772 100644
--- a/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c
+++ b/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c
@@ -1349,7 +1349,7 @@ RootBridgeIoAllocateBuffer (
       //
       // Clear DUAL_ADDRESS_CYCLE
       //
-      Attributes &= ~EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE;
+      Attributes &= ~((UINT64) EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE);
     }
     Status = mIoMmuProtocol->AllocateBuffer (
                                mIoMmuProtocol,