Man page 9 : ata_bus_probe

ata_bus_probe - Reset and probe ATA bus

int ata_bus_probe(struct ata_port *  ap );

ap
    Bus to probe

Master ATA bus probing function. Initiates a hardware-dependent bus reset, then attempts to identify any devices found on the bus.

PCI/etc. bus probe sem.

Zero on success, negative errno otherwise.

Jeff Garzik
    Author.