diff options
Diffstat (limited to 'MdeModulePkg/Universal/DriverSampleDxe')
| -rw-r--r-- | MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c b/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c index 39e72909da..784cd28d7a 100644 --- a/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c +++ b/MdeModulePkg/Universal/DriverSampleDxe/DriverSample.c @@ -362,13 +362,16 @@ ExtractConfig ( // Try to get the current setting from variable.
//
BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
- gRT->GetVariable (
- VariableName,
- &mFormSetGuid,
- NULL,
- &BufferSize,
- &PrivateData->Configuration
- );
+ Status = gRT->GetVariable (
+ VariableName,
+ &mFormSetGuid,
+ NULL,
+ &BufferSize,
+ &PrivateData->Configuration
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
if (Request == NULL) {
//
@@ -476,13 +479,16 @@ RouteConfig ( // Get Buffer Storage data from EFI variable
//
BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
- gRT->GetVariable (
- VariableName,
- &mFormSetGuid,
- NULL,
- &BufferSize,
- &PrivateData->Configuration
- );
+ Status = gRT->GetVariable (
+ VariableName,
+ &mFormSetGuid,
+ NULL,
+ &BufferSize,
+ &PrivateData->Configuration
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
//
// Convert <ConfigResp> to buffer data by helper function ConfigToBlock()
@@ -969,6 +975,17 @@ DriverSampleInit ( Status = gRT->GetVariable (VariableName, &mFormSetGuid, NULL, &BufferSize, Configuration);
if (EFI_ERROR (Status)) {
//
+ // Store zero data Buffer Storage to EFI variable
+ //
+ Status = gRT->SetVariable(
+ VariableName,
+ &mFormSetGuid,
+ EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
+ sizeof (DRIVER_SAMPLE_CONFIGURATION),
+ Configuration
+ );
+ ASSERT (Status == EFI_SUCCESS);
+ //
// EFI variable for NV config doesn't exit, we should build this variable
// based on default values stored in IFR
//
|