SATA_DEV_DMA
if (sdinfo->satadrv_settings & SATA_DEV_DMA)
sdinfo->satadrv_settings &= ~SATA_DEV_DMA;
sdinfo->satadrv_settings |= SATA_DEV_DMA;
sdinfo->satadrv_settings |= SATA_DEV_DMA;
sdinfo->satadrv_settings &= ~SATA_DEV_DMA;