X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=DuetPkg%2FFSVariable%2FFSVariable.c;h=06df161e5debdd6beb3eb9228a220f0c29a35b94;hp=5e72f9f2acd86cf65fa98788991cce52cfb1efcf;hb=e286e118bafa;hpb=dd59d95e1994c3d4dde7a0d5503109db1d207bea

diff --git a/DuetPkg/FSVariable/FSVariable.c b/DuetPkg/FSVariable/FSVariable.c
index 5e72f9f2ac..06df161e5d 100644
--- a/DuetPkg/FSVariable/FSVariable.c
+++ b/DuetPkg/FSVariable/FSVariable.c
@@ -6,7 +6,7 @@ disk. They can be changed by user. BIOS is not able to protoect those.
 Duet trusts all meta data from disk. If variable code, variable metadata and variable
 data is modified in inproper way, the behavior is undefined.
 
-Copyright (c) 2006 - 2014, 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
 which accompanies this distribution.  The full text of the license may be found at
@@ -1305,7 +1305,7 @@ DuetGetVariable (
   IN      EFI_GUID          *VendorGuid,
   OUT     UINT32            *Attributes OPTIONAL,
   IN OUT  UINTN             *DataSize,
-  OUT     VOID              *Data
+  OUT     VOID              *Data OPTIONAL
   )
 /*++
 
@@ -1320,7 +1320,8 @@ Arguments:
   Attributes OPTIONAL             Attribute value of the variable found
   DataSize                        Size of Data found. If size is less than the
                                   data, this value contains the required size.
-  Data                            Data pointer
+  Data                            The buffer to return the contents of the variable. May be NULL
+                                  with a zero DataSize in order to determine the size buffer needed.
 
 Returns: