IntelSiliconPkg IntelVTdDxe: Do not SetupVtd again

[mirror_edk2.git] / IntelSiliconPkg / Feature / VTd / IntelVTdDxe / DmaProtection.c

diff --git a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
index 6052a0aebe45197d9fd81c8280bed467893b6a71..37b3b19bce90df2b8b4e687666a59ad79e4e463d 100644 (file)
--- a/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
+++ b/IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmaProtection.c
@@ -412,6 +412,9 @@ AcpiNotificationFunc (
 \r
   Status = GetDmarAcpiTable ();\r
   if (EFI_ERROR (Status)) {\r
+    if (Status == EFI_ALREADY_STARTED) {\r
+      gBS->CloseEvent (Event);\r
+    }\r
     return;\r
   }\r
   SetupVtd ();\r