ATA_OP_NULL
.reset.hardreset = ATA_OP_NULL,
.sff_irq_clear = ATA_OP_NULL,
.port_start = ATA_OP_NULL, /* don't need PRD table */
.lost_interrupt = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.dev_config = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.reset.softreset = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,
.reset.hardreset = ATA_OP_NULL,
.lost_interrupt = ATA_OP_NULL,