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-rw-r--r--OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c8
-rw-r--r--OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf1
2 files changed, 9 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
index 25746dd1cf..39dc2b5acb 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
+++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
@@ -17,6 +17,7 @@
#include <IndustryStandard/Pci.h>
+#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PciHostBridgeLib.h>
@@ -63,6 +64,13 @@ InitRootBridge (
OUT PCI_ROOT_BRIDGE *RootBus
)
{
+ //
+ // Be safe if other fields are added to PCI_ROOT_BRIDGE later.
+ //
+ ZeroMem (RootBus, sizeof *RootBus);
+
+ RootBus->Segment = 0;
+
return EFI_OUT_OF_RESOURCES;
}
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
index b836931912..096d728f3c 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
+++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
@@ -39,6 +39,7 @@
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
+ BaseMemoryLib
DebugLib
MemoryAllocationLib
PciLib