PI 1.5 spec has minor update to the Data parameter for PEI
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 Points to the buffer which will hold the returned variable value.
->
Data Points to the buffer which will hold the returned variable value.
May be NULL with a zero DataSize in order to determine the size of the
buffer needed.
The patch is to follow the spec to update the implementation.
Cc: Liming Gao <liming....@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.z...@intel.com>
---
MdeModulePkg/Universal/Variable/Pei/Variable.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/MdeModulePkg/Universal/Variable/Pei/Variable.c
b/MdeModulePkg/Universal/Variable/Pei/Variable.c
index a072c31e60e7..4060f4711dd0 100644
--- a/MdeModulePkg/Universal/Variable/Pei/Variable.c
+++ b/MdeModulePkg/Universal/Variable/Pei/Variable.c
@@ -947,9 +947,10 @@ FindVariable (
@param DataSize On entry, points to the size in bytes of the
Data buffer.
On return, points to the size of the data
returned in Data.
@param Data Points to the buffer which will hold the
returned variable value.
+ May be NULL with a zero DataSize in order to
determine the size of the buffer needed.
@retval EFI_SUCCESS The variable was read successfully.
- @retval EFI_NOT_FOUND The variable could not be found.
+ @retval EFI_NOT_FOUND The variable was be found.
@retval EFI_BUFFER_TOO_SMALL The DataSize is too small for the resulting
data.
DataSize is updated with the size required for
the specified variable.
@@ -965,7 +966,7 @@ PeiGetVariable (
IN CONST EFI_GUID *VariableGuid,
OUT UINT32 *Attributes,
IN OUT UINTN *DataSize,
- OUT VOID *Data
+ OUT VOID *Data OPTIONAL
)
{
VARIABLE_POINTER_TRACK Variable;
--
2.7.0.windows.1
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