linux-imx

/**

 *  ide_dma_off_quietly -   Generic DMA kill

 *  @drive: drive to control

 *

 *  Turn off the current DMA on this IDE controller.

 */

​

void ide_dma_off_quietly(ide_drive_t *drive)

{

    drive->dev_flags &= ~IDE_DFLAG_USING_DMA;

​

    drive->hwif->dma_ops->dma_host_set(drive, 0);

}

EXPORT_SYMBOL(ide_dma_off_quietly);

​

/**

 *  ide_dma_off -   disable DMA on a device

 *  @drive: drive to disable DMA on

 *

 *  Disable IDE DMA for a device on this IDE controller.

/**

 *  ide_dma_on      -   Enable DMA on a device

 *  @drive: drive to enable DMA on

 *

 *  Enable IDE DMA for a device on this IDE controller.

 */

​

void ide_dma_on(ide_drive_t *drive)

{

    drive->dev_flags |= IDE_DFLAG_USING_DMA;

​

    drive->hwif->dma_ops->dma_host_set(drive, 1);

}

​

int __ide_dma_bad_drive(ide_drive_t *drive)

{

    u16 *id = drive->id;

​

    int blacklist = ide_in_drive_list(id, drive_blacklist);

    if (blacklist) {