MdeModulePkg Variable: Add missing change in dd59d95e1994

[mirror_edk2.git] / MdeModulePkg / Universal / Variable / RuntimeDxe / Variable.h

diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
index 5c224b973773036279b04182d01b85db86c7c880..cd0d9568158a1d59594eba7f484db5b08d2036e9 100644 (file)
--- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
+++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h
@@ -2,7 +2,7 @@
   The internal header file includes the common header files, defines\r
   internal structure and functions used by Variable modules.\r
 \r
-Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r
 This program and the accompanying materials\r
 are licensed and made available under the terms and conditions of the BSD License\r
 which accompanies this distribution.  The full text of the license may be found at\r
@@ -389,7 +389,7 @@ ReleaseLockOnlyAtBootTime (
   );\r
 \r
 /**\r
-  Retrive the FVB protocol interface by HANDLE.\r
+  Retrieve the FVB protocol interface by HANDLE.\r
 \r
   @param[in]  FvBlockHandle     The handle of FVB protocol that provides services for\r
                                 reading, writing, and erasing the target block.\r
@@ -472,7 +472,7 @@ VariableWriteServiceInitialize (
   );\r
 \r
 /**\r
-  Retrive the SMM Fault Tolerent Write protocol interface.\r
+  Retrieve the SMM Fault Tolerent Write protocol interface.\r
 \r
   @param[out] FtwProtocol       The interface of SMM Ftw protocol\r
 \r
@@ -514,7 +514,8 @@ GetFvbInfoByAddress (
   @param Attributes                 Attribute value of the variable found.\r
   @param DataSize                   Size of Data found. If size is less than the\r
                                     data, this value contains the required size.\r
-  @param Data                       Data pointer.\r
+  @param Data                       The buffer to return the contents of the variable. May be NULL\r
+                                    with a zero DataSize in order to determine the size buffer needed.\r
 \r
   @return EFI_INVALID_PARAMETER     Invalid parameter.\r
   @return EFI_SUCCESS               Find the specified variable.\r
@@ -529,7 +530,7 @@ VariableServiceGetVariable (
   IN      EFI_GUID          *VendorGuid,\r
   OUT     UINT32            *Attributes OPTIONAL,\r
   IN OUT  UINTN             *DataSize,\r
-  OUT     VOID              *Data\r
+  OUT     VOID              *Data OPTIONAL\r
   );\r
 \r
 /**\r