Moving the initialization code from rdac_activate to rdac_bus_attach which is more efficient.
We don't have to collect all the information during every activate.
Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
Reviewed-by: Vijay Chauhan <vijay.chauhan@xxxxxxx>
Reviewed-by: Bob Stankey <Robert.stankey@xxxxxxx>
---
--- linux-2.6.31-rc5/drivers/scsi/device_handler/scsi_dh_rdac.c.orig 2009-09-03 13:39:52.000000000 -0500
+++ linux-2.6.31-rc5/drivers/scsi/device_handler/scsi_dh_rdac.c 2009-09-03 14:10:40.000000000 -0500
@@ -525,17 +525,6 @@ static int rdac_activate(struct scsi_dev
if (err != SCSI_DH_OK)
goto done;
- if (!h->ctlr) {
- err = initialize_controller(sdev, h);
- if (err != SCSI_DH_OK)
- goto done;
- }
-
- if (h->ctlr->use_ms10 == -1) {
- err = set_mode_select(sdev, h);
- if (err != SCSI_DH_OK)
- goto done;
- }
if (h->lun_state == RDAC_LUN_UNOWNED)
err = send_mode_select(sdev, h);
done:
@@ -674,12 +663,20 @@ static int rdac_bus_attach(struct scsi_d
if (err != SCSI_DH_OK)
goto failed;
- err = check_ownership(sdev, h);
+ err = initialize_controller(sdev, h);
if (err != SCSI_DH_OK)
goto failed;
+ err = check_ownership(sdev, h);
+ if (err != SCSI_DH_OK)
+ goto clean_ctlr;
+
+ err = set_mode_select(sdev, h);
+ if (err != SCSI_DH_OK)
+ goto clean_ctlr;
+
if (!try_module_get(THIS_MODULE))
- goto failed;
+ goto clean_ctlr;
spin_lock_irqsave(sdev->request_queue->queue_lock, flags);
sdev->scsi_dh_data = scsi_dh_data;
@@ -691,6 +688,9 @@ static int rdac_bus_attach(struct scsi_d
return 0;
+clean_ctlr:
+ kref_put(&h->ctlr->kref, release_controller);
+
failed:
kfree(scsi_dh_data);
sdev_printk(KERN_ERR, sdev, "%s: not attached\n",
--
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