NAME
ata_devchk - PATA device presence detection
SYNOPSIS
unsigned int ata_devchk (struct ata_port * ap, unsigned int device);
ARGUMENTS
ap ATA channel to examine
device Device to examine (starting at zero)
DESCRIPTION
Dispatch ATA device presence detection, depending on whether we are
using PIO or MMIO to talk to the ATA shadow registers.
LOCKING
caller.
AUTHOR
Jeff Garzik.