SleepstudyHelperDestroyBlocker

NTSTATUS __stdcall SleepstudyHelperDestroyBlocker(PKSPIN_LOCK SpinLock){
  NTSTATUS v2; 
  unsigned __int64 v3; 
  int v4; 

  if( !SpinLock )
    return -1073741811;
  v3 = (unsigned __int8)KeAcquireSpinLockRaiseToDpc(SpinLock);
  v4 = *((_DWORD *)SpinLock + 2);
  if( (v4 & 8) != 0 )
  {
    v2 = -1073741811;
  }
  else
  {
    *((_DWORD *)SpinLock + 2) = v4 | 8;
    v2 = 0;
  }
  KxReleaseSpinLock(SpinLock);
  __writecr8(v3);
  return v2;
}

Referenced by:

SleepstudyHelper_RegisterComponentEx
SleepstudyHelper_RegisterPdoWithParentGuid
SleepstudyHelper_RegisterPdoWithParentHandle
SleepstudyHelper_RegisterPdoWithParentPdo
SleepstudyHelper_UnregisterComponent