ata_scsi_qc_new — acquire new ata_queued_cmd reference
struct ata_queued_cmd * ata_scsi_qc_new ( | struct ata_device * dev, |
struct scsi_cmnd * cmd) ; |
struct ata_device * dev
ATA device to which the new command is attached
struct scsi_cmnd * cmd
SCSI command that originated this ATA command
Obtain a reference to an unused ata_queued_cmd structure, which is the basic libata structure representing a single ATA command sent to the hardware.
If a command was available, fill in the SCSI-specific portions of the structure with information on the current command.
LOCKING: spin_lock_irqsave(host lock)