mpt3sas: delay scsi_add_host call to work with scsi-mq
In _scsih_probe, delay the call to scsi_add_host until the host has been
fully set up.
Otherwise, the default .can_queue value of 1 causes scsi-mq to set the block
layer request queue size to its minimum size, resulting in awful performance.
In _scsih_probe error handling, call mpt3sas_base_detach rather than
scsi_remove_host to properly clean up in reverse order.
In _scsih_remove, call scsi_remove_host earlier to clean up in reverse order.
Signed-off-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@avagotech.com>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index c608a61..93ce2b2 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -266,7 +266,7 @@
ioc->fault_reset_work_q = NULL;
spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
if (wq) {
- if (!cancel_delayed_work(&ioc->fault_reset_work))
+ if (!cancel_delayed_work_sync(&ioc->fault_reset_work))
flush_workqueue(wq);
destroy_workqueue(wq);
}
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 57020d5..7cf48c5 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -2581,11 +2581,10 @@
return;
list_for_each_entry_safe(fw_event, next, &ioc->fw_event_list, list) {
- if (cancel_delayed_work(&fw_event->delayed_work)) {
+ if (cancel_delayed_work_sync(&fw_event->delayed_work)) {
_scsih_fw_event_free(ioc, fw_event);
continue;
}
- fw_event->cancel_pending_work = 1;
}
}
@@ -7039,7 +7038,7 @@
_mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
{
/* the queue is being flushed so ignore this event */
- if (ioc->remove_host || fw_event->cancel_pending_work ||
+ if (ioc->remove_host ||
ioc->pci_error_recovery) {
_scsih_fw_event_free(ioc, fw_event);
return;
@@ -7439,9 +7438,9 @@
}
sas_remove_host(shost);
+ scsi_remove_host(shost);
mpt3sas_base_detach(ioc);
list_del(&ioc->list);
- scsi_remove_host(shost);
scsi_host_put(shost);
}
@@ -7809,13 +7808,6 @@
}
}
- if ((scsi_add_host(shost, &pdev->dev))) {
- pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
- ioc->name, __FILE__, __LINE__, __func__);
- list_del(&ioc->list);
- goto out_add_shost_fail;
- }
-
/* register EEDP capabilities with SCSI layer */
if (prot_mask > 0)
scsi_host_set_prot(shost, prot_mask);
@@ -7843,15 +7835,21 @@
ioc->name, __FILE__, __LINE__, __func__);
goto out_attach_fail;
}
+ if ((scsi_add_host(shost, &pdev->dev))) {
+ pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
+ ioc->name, __FILE__, __LINE__, __func__);
+ list_del(&ioc->list);
+ goto out_add_shost_fail;
+ }
+
scsi_scan_host(shost);
return 0;
-
+out_add_shost_fail:
+ mpt3sas_base_detach(ioc);
out_attach_fail:
destroy_workqueue(ioc->firmware_event_thread);
out_thread_fail:
list_del(&ioc->list);
- scsi_remove_host(shost);
- out_add_shost_fail:
scsi_host_put(shost);
return -ENODEV;
}