Name
ata_scsi_qc_new —
acquire new ata_queued_cmd reference
Synopsis
struct ata_queued_cmd * ata_scsi_qc_new ( | struct ata_port * | ap, |
| | struct ata_device * | dev, |
| | struct scsi_cmnd * | cmd, |
| | void (* | done)
(struct scsi_cmnd *)); |
Arguments
- ap
ATA port to which the new command is attached
- dev
ATA device to which the new command is attached
- cmd
SCSI command that originated this ATA command
- done
SCSI command completion function
Description
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_set lock)
RETURNS
Command allocated, or NULL if none available.