Add the definition for the new return status code defined in UEFI 2.6.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Ye Ting <ting...@intel.com>
---
 MdePkg/Include/Base.h              | 6 ++++++
 MdePkg/Include/Protocol/LoadFile.h | 4 ++--
 MdePkg/Include/Uefi/UefiBaseType.h | 3 ++-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/MdePkg/Include/Base.h b/MdePkg/Include/Base.h
index f45f344..89b2aed 100644
--- a/MdePkg/Include/Base.h
+++ b/MdePkg/Include/Base.h
@@ -974,6 +974,12 @@ typedef UINTN RETURN_STATUS;
 ///
 #define RETURN_WARN_STALE_DATA       ENCODE_WARNING (5)
 
+///
+/// The resulting buffer contains UEFI-compliant file system.
+///
+#define RETURN_WARN_FILE_SYSTEM      ENCODE_WARNING (6)
+
+
 /**
   Returns a 16-bit signature built from 2 ASCII characters.
 
diff --git a/MdePkg/Include/Protocol/LoadFile.h 
b/MdePkg/Include/Protocol/LoadFile.h
index 4e4214f..eb03b32 100644
--- a/MdePkg/Include/Protocol/LoadFile.h
+++ b/MdePkg/Include/Protocol/LoadFile.h
@@ -7,7 +7,7 @@
 
   UEFI 2.0 can boot from any device that produces a LoadFile protocol.
 
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, 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 that accompanies this 
distribution.  
 The full text of the license may be found at
@@ -64,7 +64,7 @@ typedef EFI_LOAD_FILE_PROTOCOL  EFI_LOAD_FILE_INTERFACE;
   @retval EFI_NO_RESPONSE       The remote system did not respond.
   @retval EFI_NOT_FOUND         The file was not found.
   @retval EFI_ABORTED           The file load process was manually cancelled.
-
+  @retval EFI_WARN_FILE_SYSTEM  The resulting Buffer contains UEFI-compliant 
file system.
 **/
 typedef
 EFI_STATUS
diff --git a/MdePkg/Include/Uefi/UefiBaseType.h 
b/MdePkg/Include/Uefi/UefiBaseType.h
index 90a93db..84e4dc6 100644
--- a/MdePkg/Include/Uefi/UefiBaseType.h
+++ b/MdePkg/Include/Uefi/UefiBaseType.h
@@ -1,7 +1,7 @@
 /** @file
   Defines data types and constants introduced in UEFI.
 
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
 Portions copyright (c) 2011 - 2016, ARM Ltd. All rights reserved.<BR>
 
 This program and the accompanying materials are licensed and made available 
under 
@@ -158,6 +158,7 @@ typedef union {
 #define EFI_WARN_WRITE_FAILURE    RETURN_WARN_WRITE_FAILURE   
 #define EFI_WARN_BUFFER_TOO_SMALL RETURN_WARN_BUFFER_TOO_SMALL
 #define EFI_WARN_STALE_DATA       RETURN_WARN_STALE_DATA
+#define EFI_WARN_FILE_SYSTEM      RETURN_WARN_FILE_SYSTEM
 ///@}
 
 ///
-- 
2.7.0.windows.2

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