HIFN_FLAG_RES_BUSY
if (!(dev->flags & HIFN_FLAG_RES_BUSY)) {
dev->flags |= HIFN_FLAG_RES_BUSY;
if (dma->resu == 0 && (dev->flags & HIFN_FLAG_RES_BUSY)) {
dev->flags &= ~HIFN_FLAG_RES_BUSY;