This is the first of the patches that set the fields of PCI_ROOT_BRIDGE.
The structure is zero-filled as a precaution for later field additions.
Here we set the Segment member explicitly to zero (so that any later
customization can be easier).
Cc: Jordan Justen <jordan.l.jus...@intel.com>
Cc: Ruiyu Ni <ruiyu...@intel.com>
Cc: Marcel Apfelbaum <mar...@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <ler...@redhat.com>
---
OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf | 1 +
OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
index b83693191261..096d728f3c61 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
+++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
@@ -39,6 +39,7 @@ [Packages]
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
+ BaseMemoryLib
DebugLib
MemoryAllocationLib
PciLib
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
index ef841c085e85..7dd88e02283a 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>
@@ -65,6 +66,13 @@ 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;
}
--
1.8.3.1
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