diff --git a/IntelSiliconPkg/Feature/VTd/PlatformVTdSampleDxe/PlatformVTdSampleDxe.c b/IntelSiliconPkg/Feature/VTd/PlatformVTdSampleDxe/PlatformVTdSampleDxe.c
index 3587fa3c83..e522db069a 100644
--- a/IntelSiliconPkg/Feature/VTd/PlatformVTdSampleDxe/PlatformVTdSampleDxe.c
+++ b/IntelSiliconPkg/Feature/VTd/PlatformVTdSampleDxe/PlatformVTdSampleDxe.c
@@ -359,6 +359,7 @@ PlatformVTdGetExceptionDeviceList (
   // Uncomment to take affect and comment the sample codes for device scope
   // based exception list.
   //
+  /*
   *DeviceInfo = AllocateZeroPool (sizeof(mExceptionPciDeviceIdList));
   if (*DeviceInfo == NULL) {
     return EFI_OUT_OF_RESOURCES;
@@ -366,8 +367,8 @@ PlatformVTdGetExceptionDeviceList (
   CopyMem (*DeviceInfo, mExceptionPciDeviceIdList, sizeof(mExceptionPciDeviceIdList));
 
   *DeviceInfoCount = ARRAY_SIZE(mExceptionPciDeviceIdList);
-
-  return EFI_SUCCESS;
+  */
+  return EFI_UNSUPPORTED;
 }
 
 EDKII_PLATFORM_VTD_POLICY_PROTOCOL  mPlatformVTdSample = {