PORT_IRQ_STAT     117 drivers/ata/ahci.h 	PORT_IRQ_STAT		= 0x10, /* interrupt status */
PORT_IRQ_STAT      93 drivers/ata/sata_inic162x.c 	PORT_IRQ_STAT		= 0x09,
PORT_IRQ_STAT     115 drivers/ata/sata_sil24.c 	PORT_IRQ_STAT		= 0x1008, /* high: status, low: interrupt */