From 04da0b4a11fd128c08fb0192c02a142285f6fa69 Mon Sep 17 00:00:00 2001
From: lgao4 <lgao4@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 18 May 2009 05:03:45 +0000
Subject: Correct DriverSample to produce the ConfigAccess protocol And fix the
 bug in HiiDataBase to incorrectly free pool.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8321 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../Universal/DriverSampleDxe/DriverSample.c       | 45 +++++++++++++++-------
 1 file changed, 31 insertions(+), 14 deletions(-)

(limited to 'MdeModulePkg/Universal/DriverSampleDxe')

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()
@@ -968,6 +974,17 @@ DriverSampleInit (
   BufferSize = sizeof (DRIVER_SAMPLE_CONFIGURATION);
   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
-- 
cgit v1.2.3