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-rw-r--r--MdeModulePkg/Bus/Pci/UndiRuntimeDxe/E100b.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Pci/UndiRuntimeDxe/E100b.h b/MdeModulePkg/Bus/Pci/UndiRuntimeDxe/E100b.h
index 957e92b604..60acdb824c 100644
--- a/MdeModulePkg/Bus/Pci/UndiRuntimeDxe/E100b.h
+++ b/MdeModulePkg/Bus/Pci/UndiRuntimeDxe/E100b.h
@@ -12,6 +12,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
+#ifndef _E100B_H_
+#define _E100B_H_
+
// pci config offsets:
#define RX_BUFFER_COUNT 32
@@ -663,3 +666,6 @@ struct MC_CB_STRUCT{
#pragma pack()
#define FOUR_GIGABYTE (UINT64)0x100000000ULL
+
+#endif
+