CmValidateInstallerClassName

NTSTATUS __stdcall CmValidateInstallerClassName(WCHAR *ClassGuid){
  const wchar_t *v1; 

  return !PnpIsValidGuidString(v1) ? 0xC0000033 : 0;
}

Referenced by:

CmClassSubkeyCallback
CmGetCommonClassRegKeyPath
CmGetDeviceInterfaceName
PnpDispatchInstallerClass
PnpDispatchInterfaceClass