[SCSI] hpsa: update raid offload status on device rescan

When rescanning for logical drives, store information about whather
raid offload is enabled for each logical drive, and update the driver's
internal record of this.
Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

drivers/scsi/hpsa.c

@@ -787,6 +787,11 @@ static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno,
 
 	/* Raid level changed. */
 	h->dev[entry]->raid_level = new_entry->raid_level;
+
+	/* Raid offload parameters changed. */
+	h->dev[entry]->offload_config = new_entry->offload_config;
+	h->dev[entry]->offload_enabled = new_entry->offload_enabled;
+
 	dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d updated.\n",
 		scsi_device_type(new_entry->devtype), hostno, new_entry->bus,
 		new_entry->target, new_entry->lun);
@@ -907,6 +912,10 @@ static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
 	 */
 	if (dev1->raid_level != dev2->raid_level)
 		return 1;
+	if (dev1->offload_config != dev2->offload_config)
+		return 1;
+	if (dev1->offload_enabled != dev2->offload_enabled)
+		return 1;
 	return 0;
 }