NAME
ata_sg_setup_one - DMA-map the memory buffer associated with a command.
SYNOPSIS
int ata_sg_setup_one (struct ata_queued_cmd * qc);
ARGUMENTS
qc Command with memory buffer to be mapped.
DESCRIPTION
DMA-map the memory buffer associated with queued_cmd qc.
LOCKING
spin_lock_irqsave(host_set lock)
RETURNS
Zero on success, negative on error.
AUTHOR
Jeff Garzik.