diff --git a/EmbeddedPkg/Library/NullDmaLib/NullDmaLib.c b/EmbeddedPkg/Library/NullDmaLib/NullDmaLib.c
index 0ea89190c9..74386dfa28 100755
--- a/EmbeddedPkg/Library/NullDmaLib/NullDmaLib.c
+++ b/EmbeddedPkg/Library/NullDmaLib/NullDmaLib.c
@@ -50,6 +50,8 @@ DmaMap (
   OUT    VOID                           **Mapping
   )
 {
+  *DeviceAddress = (PHYSICAL_ADDRESS)(UINTN)HostAddress;
+  *Mapping = NULL;
   return EFI_SUCCESS;
 }