From: qwang12 <qwang12@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Fri, 29 Aug 2008 01:53:37 +0000 (+0000)
Subject: GetNextMonotonicCount may not be available when GenerateRandomGuid is called. Add... 
X-Git-Tag: edk2-stable201903~20468
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=138f2f82d8196c39635d0bfd68d87c65153a7c54;p=mirror_edk2.git

GetNextMonotonicCount may not be available when GenerateRandomGuid is called. Add a static variable as a seed.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5752 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/EdkCompatibilityPkg/Compatibility/FrameworkHiiToUefiHiiThunk/Package.c b/EdkCompatibilityPkg/Compatibility/FrameworkHiiToUefiHiiThunk/Package.c
index a867689252..6e2c9dfd34 100644
--- a/EdkCompatibilityPkg/Compatibility/FrameworkHiiToUefiHiiThunk/Package.c
+++ b/EdkCompatibilityPkg/Compatibility/FrameworkHiiToUefiHiiThunk/Package.c
@@ -184,19 +184,13 @@ GenerateRandomGuid (
   OUT           EFI_GUID * Guid
   )
 {
-  EFI_STATUS      Status;
-  static EFI_GUID GuidBase = { 0x14f95e01, 0xd562, 0x432e, { 0x84, 0x4a, 0x95, 0xa4, 0x39, 0x5, 0x10, 0x7e }};
-  UINT64          MonotonicCount;
+  EFI_GUID        GuidBase = { 0x14f95e01, 0xd562, 0x432e, { 0x84, 0x4a, 0x95, 0xa4, 0x39, 0x5, 0x10, 0x7e }};
+  static  UINT64  Count = 0;
 
   CopyGuid (Guid, &GuidBase);
-  
-  Status = gBS->GetNextMonotonicCount (&MonotonicCount);
-  ASSERT_EFI_ERROR (Status);
-  
-  //
-  // Use Monotonic Count as a psedo random number generator.
-  //
-  *((UINT64 *) Guid) = *((UINT64 *) Guid) + MonotonicCount;
+
+  Count++;  
+  *((UINT64 *) Guid) = *((UINT64 *) Guid) + Count;
 }
 
 EFI_STATUS