[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: Jeff Garzik <jgarzik@pobox.com>

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/scsi/libata-scsi.c

@@ -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;
 }