From ebe8ef866b7003ffa222ab8bb20b989f0132f206 Mon Sep 17 00:00:00 2001
From: Star Zeng <star.zeng@intel.com>
Date: Wed, 11 Apr 2018 14:18:38 +0800
Subject: MdePkg DxeHstiLib: Fix ErrorString pointer incorrectly calculated

Fix ErrorString pointer is incorrectly calculated in
InternalHstiIsValidTable().

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
---
 MdePkg/Library/DxeHstiLib/HstiDxe.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/MdePkg/Library/DxeHstiLib/HstiDxe.c b/MdePkg/Library/DxeHstiLib/HstiDxe.c
index 5851076..d08d8de 100644
--- a/MdePkg/Library/DxeHstiLib/HstiDxe.c
+++ b/MdePkg/Library/DxeHstiLib/HstiDxe.c
@@ -1,6 +1,6 @@
 /** @file
 
-  Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
@@ -211,7 +211,7 @@ InternalHstiIsValidTable (
   }
 
   ErrorStringSize = HstiSize - sizeof(ADAPTER_INFO_PLATFORM_SECURITY) - Hsti->SecurityFeaturesSize * 3;
-  ErrorString = (CHAR16 *)((UINTN)Hsti + sizeof(ADAPTER_INFO_PLATFORM_SECURITY) - Hsti->SecurityFeaturesSize * 3);
+  ErrorString = (CHAR16 *)((UINTN)Hsti + sizeof(ADAPTER_INFO_PLATFORM_SECURITY) + Hsti->SecurityFeaturesSize * 3);
 
   //
   // basic check for ErrorString
-- 
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