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scsi: smartpqi: Correct system hangs when resuming from hibernation

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Correct system hangs when resuming from hibernation after first successful
hibernation/resume cycle. Rare condition involving OFA.

Note: Suspend/resume is not supported on many platforms. It was originally
intended for workstations.

Link: https://lore.kernel.org/r/161549386295.25025.14555840632114761610.stgit@brunhilda
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Kevin Barnett 2021-03-11 14:17:42 -06:00 committed by Martin K. Petersen
parent d0cba99fd7
commit 43e97ef482
1 changed files with 7 additions and 0 deletions
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7
drivers/scsi/smartpqi/smartpqi_init.c
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@ -8651,14 +8651,21 @@ static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
pci_dev->irq, rc);
return rc;
}
pqi_ctrl_unblock_device_reset(ctrl_info);
pqi_ctrl_unblock_requests(ctrl_info);
pqi_scsi_unblock_requests(ctrl_info);
pqi_ctrl_unblock_scan(ctrl_info);
return 0;
}
pci_set_power_state(pci_dev, PCI_D0);
pci_restore_state(pci_dev);
pqi_ctrl_unblock_device_reset(ctrl_info);
pqi_ctrl_unblock_requests(ctrl_info);
pqi_scsi_unblock_requests(ctrl_info);
pqi_ctrl_unblock_scan(ctrl_info);
return pqi_ctrl_init_resume(ctrl_info);
}