ATA_DMA_ACTIVE
if (host_stat & ATA_DMA_ACTIVE)
return ATA_DMA_ACTIVE;
if (dma_stat & ATA_DMA_ACTIVE) {
if (dma_stat & ATA_DMA_ACTIVE) {
priv->waiting_for_dma = ATA_DMA_ACTIVE;
if (reg & ATA_DMA_ACTIVE)
status = ATA_DMA_ACTIVE;
host_stat |= ATA_DMA_ACTIVE;