From: Dong, Eric <eric.dong@intel.com>
Date: Fri, 10 Apr 2020 06:54:01 +0000 (+0800)
Subject: UefiCpuPkg/PiSmmCpuDxeSmm: Remove useless code in ResetTokens.
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1cae0d42155771bdaa9712868bef507666efa85c;p=people%2Faperard%2Fovmf.git

UefiCpuPkg/PiSmmCpuDxeSmm: Remove useless code in ResetTokens.

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2388

After remove Used parameter, below code in ResetTokens can also be
removed:
1. The RunningApCount parameter will be reset in GetFreeToken.
2. The ReleaseSpinLock should be called in ReleaseToken function,
   Code in this function seems like a later fix if ReleaseToken not
   Release it. We should remove code here and fix the real issue if
   existed.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
---

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
index 305bffa9bc..57e788c01b 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
@@ -433,26 +433,6 @@ ResetTokens (
   VOID
   )
 {
-  LIST_ENTRY            *Link;
-  PROCEDURE_TOKEN       *ProcToken;
-
-  Link = GetFirstNode (&gSmmCpuPrivate->TokenList);
-  while (!IsNull (&gSmmCpuPrivate->TokenList, Link)) {
-    ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link);
-
-    ProcToken->RunningApCount = 0;
-
-    //
-    // Check the spinlock status and release it if not released yet.
-    //
-    if (!AcquireSpinLockOrFail(ProcToken->SpinLock)) {
-      DEBUG((DEBUG_ERROR, "Risk::SpinLock still not released!"));
-    }
-    ReleaseSpinLock (ProcToken->SpinLock);
-
-    Link = GetNextNode (&gSmmCpuPrivate->TokenList, Link);
-  }
-
   //
   // Reset the FirstFreeToken to the beginning of token list upon exiting SMI.
   //