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hpsa: correct initialization order issue

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The driver was calling scsi_scan_host before enabling interrupts.

This has gone unnoticed except for customers running in intx mode.
Calling scsi_scan_host before interrupts are enabled causes
"irq XX: nobody cared" messages and the driver to hang.

This patch enables interrupts before the call to scsi_scan_host.

Reported-by: Piotr Karbowski <piotr.karbowski@gmail.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Don Brace 2016-04-27 17:13:26 -05:00 committed by Martin K. Petersen
parent 139112fb34
commit cf47723763
1 changed files with 5 additions and 5 deletions
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10
drivers/scsi/hpsa.c
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@ -8541,11 +8541,6 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (rc)
goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
/* hook into SCSI subsystem */
rc = hpsa_scsi_add_host(h);
if (rc)
goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
/* create the resubmit workqueue */
h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
if (!h->rescan_ctlr_wq) {
@ -8642,6 +8637,11 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
dev_info(&h->pdev->dev,
"Can't track change to report lun data\n");
/* hook into SCSI subsystem */
rc = hpsa_scsi_add_host(h);
if (rc)
goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
/* Monitor the controller for firmware lockups */
h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);