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mpt2sas: delay scsi_add_host call to work with scsi-mq

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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>
This commit is contained in:
Reddy, Sreekanth
2014-07-14 12:00:49 +05:30
committed by Christoph Hellwig
parent 3533f8603d
commit 02b7708134
2 changed files with 13 additions and 14 deletions
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2
drivers/scsi/mpt2sas/mpt2sas_base.c
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@@ -277,7 +277,7 @@ mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
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);
}