CXM_MBX_FLAG_DRV_DONE
if ((flags & (CXM_MBX_FLAG_DRV_DONE | CXM_MBX_FLAG_FW_DONE))
== (CXM_MBX_FLAG_DRV_DONE | CXM_MBX_FLAG_FW_DONE)) {
CXM_MBX_FLAG_IN_USE | CXM_MBX_FLAG_DRV_DONE);