MAX_BD_NUM
memset(bd, 0, sizeof(struct mt_bdma_desc) * MAX_BD_NUM);
for (i = 0; i < (MAX_BD_NUM - 1); i++) {
mmc->max_segs = MAX_BD_NUM;
MAX_BD_NUM * sizeof(struct mt_bdma_desc),
MAX_BD_NUM * sizeof(struct mt_bdma_desc),
dma_free_coherent(&pdev->dev, MAX_BD_NUM * sizeof(struct mt_bdma_desc),