[PATCH v3 4/4] OvmfPkg/SmmControl2Dxe: use PcdAcpiS3Enable to detect S3 support

["Lin, Gary (HPS OE-Linux)" <gary.lin@hpe.com>]

https://bugzilla.tianocore.org/show_bug.cgi?id=3573

To avoid the potential inconsistency between PcdAcpiS3Enable and
QemuFwCfgS3Enabled(), this commit modifies SmmControl2Dxe to detect
S3 support by PcdAcpiS3Enable as modules in MdeModulePkg do.

v3:
  - Add the bugzilla link

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Jim Fehlig <jfehlig@suse.com>
Cc: Joey Li <jlee@suse.com>
Signed-off-by: Gary Lin <gary.lin@hpe.com>
---
 OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.inf | 2 ++
 OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.c   | 4 +---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.inf b/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.inf
index b8fdea8deb84..4cad56516f49 100644
--- a/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.inf
+++ b/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.inf
@@ -39,6 +39,7 @@ [Sources]
 
 [Packages]
   MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
   OvmfPkg/OvmfPkg.dec
   UefiCpuPkg/UefiCpuPkg.dec
 
@@ -62,6 +63,7 @@ [Protocols]
 [Pcd]
   gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmApSyncTimeout ## SOMETIMES_PRODUCES
   gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmSyncMode      ## SOMETIMES_PRODUCES
+  gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiS3Enable
 
 [FeaturePcd]
   gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
diff --git a/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.c b/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.c
index 9547c202880f..be04baf7b288 100644
--- a/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.c
+++ b/OvmfPkg/SmmControl2Dxe/SmmControl2Dxe.c
@@ -25,8 +25,6 @@
 #include <Library/IoLib.h>
 #include <Library/PcdLib.h>
 #include <Library/PciLib.h>
-#include <Library/QemuFwCfgLib.h>
-#include <Library/QemuFwCfgS3Lib.h>
 #include <Library/UefiBootServicesTableLib.h>
 #include <Protocol/S3SaveState.h>
 #include <Protocol/SmmControl2.h>
@@ -238,7 +236,7 @@ SmmControl2DxeEntryPoint (
   //
   mSmiFeatureNegotiation = NegotiateSmiFeatures ();
 
-  if (QemuFwCfgS3Enabled ()) {
+  if (PcdGetBool (PcdAcpiS3Enable)) {
     VOID *Registration;
 
     //
-- 
2.31.1