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Commit 99ba9e09 authored by Brian King's avatar Brian King Committed by Jeff Garzik
Browse files

[PATCH] libata: Add ata_scsi_dev_disabled 



Separate out parts of ata_scsi_find_dev to be reused in
future SAS/SATA patches.

Acked-by: default avatarJeff Garzik <jgarzik@pobox.com>

Signed-off-by: default avatarBrian King <brking@us.ibm.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent ba6a1308

drivers/scsi/libata-scsi.c

+31 −10
Original line number Diff line number Diff line
@@ -2373,6 +2373,36 @@ static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap, 
	return ata_find_dev(ap, scsidev->id);

}



/**

 *	ata_scsi_dev_enabled - determine if device is enabled

 *	@dev: ATA device

 *

 *	Determine if commands should be sent to the specified device.

 *

 *	LOCKING:

 *	spin_lock_irqsave(host_set lock)

 *

 *	RETURNS:

 *	0 if commands are not allowed / 1 if commands are allowed

 */



static int ata_scsi_dev_enabled(struct ata_device *dev)

{

	if (unlikely(!ata_dev_enabled(dev)))

		return 0;



	if (!atapi_enabled || (dev->ap->flags & ATA_FLAG_NO_ATAPI)) {

		if (unlikely(dev->class == ATA_DEV_ATAPI)) {

			ata_dev_printk(dev, KERN_WARNING,

				       "WARNING: ATAPI is %s, device ignored.\n",

				       atapi_enabled ? "not supported with this driver" : "disabled");

			return 0;

		}

	}



	return 1;

}



/**

 *	ata_scsi_find_dev - lookup ata_device from scsi_cmnd

 *	@ap: ATA port to which the device is attached
@@ -2394,18 +2424,9 @@ ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) 
{

	struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);



	if (unlikely(!dev || !ata_dev_enabled(dev)))

	if (unlikely(!dev || !ata_scsi_dev_enabled(dev)))

		return NULL;



	if (!atapi_enabled || (ap->flags & ATA_FLAG_NO_ATAPI)) {

		if (unlikely(dev->class == ATA_DEV_ATAPI)) {

			ata_dev_printk(dev, KERN_WARNING,

				"WARNING: ATAPI is %s, device ignored.\n",

				atapi_enabled ? "not supported with this driver" : "disabled");

			return NULL;

		}

	}



	return dev;

}