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MdeModulePkg Variable: Minor update to the Data parameter for GetVariable() 

UEFI 2.6 spec has minor update to the Data parameter for GetVariable(),
and no real functional behavior change.

The modifier of Data parameter:
OUT VOID *Data
->
OUT VOID *Data OPTIONAL

The comments of Data parameter:
Data	The buffer to return the contents of the variable.
->
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.

The patch is to follow the spec to update the implementation.

Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19771 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Star Zeng 2016-01-29 09:15:43 +00:00 committed by lzeng14
parent 61ce1aea26
commit dd59d95e19
2 changed files with 7 additions and 5 deletions
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7
MdeModulePkg/Universal/Variable/EmuRuntimeDxe/InitVariable.c
View File

@ -3,7 +3,7 @@
Implment all four UEFI runtime variable services and
install variable architeture 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
which accompanies this distribution. The full text of the license may be found at
@ -27,7 +27,8 @@ EFI_EVENT mVirtualAddressChangeEvent = NULL;
@param Attributes Attribute value of the variable found.
@param DataSize Size of Data found. If size is less than the
data, this value contains the required size.
@param Data Data pointer.
@param 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.
@return EFI_INVALID_PARAMETER Invalid parameter
@return EFI_SUCCESS Find the specified variable
@ -42,7 +43,7 @@ RuntimeServiceGetVariable (
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data
OUT VOID *Data OPTIONAL
)
{
return EmuGetVariable (

5
MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c
View File

@ -2822,7 +2822,8 @@ Done:
@param Attributes Attribute value of the variable found.
@param DataSize Size of Data found. If size is less than the
data, this value contains the required size.
@param Data Data pointer.
@param 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.
@return EFI_INVALID_PARAMETER Invalid parameter.
@return EFI_SUCCESS Find the specified variable.
@ -2837,7 +2838,7 @@ VariableServiceGetVariable (
IN EFI_GUID *VendorGuid,
OUT UINT32 *Attributes OPTIONAL,
IN OUT UINTN *DataSize,
OUT VOID *Data
OUT VOID *Data OPTIONAL
)
{
EFI_STATUS Status;