[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>

1 files changed, 31 insertions, 10 deletions

diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c
index d86abed62007..93d18a74c401 100644
--- a/drivers/scsi/libata-scsi.c
+++ b/drivers/scsi/libata-scsi.c
@@ -2374,6 +2374,36 @@ static struct ata_device * __ata_scsi_find_dev(struct ata_port *ap,
 }
 
 /**
+ *      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
  *      @scsidev: SCSI device from which we derive the ATA device
@@ -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;
 }