[PATCH V4 29/31] smartpqi: correct system hangs when resuming from hibernation

[Don Brace <don.brace@xxxxxxxxxxxxx>]

From: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>

* 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. This patch
      is already in our out-of-box driver and has undergone a
      lot of testing.

Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx>
Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx>
Signed-off-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
---
 drivers/scsi/smartpqi/smartpqi_init.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 330688c32808..48eddfdf0a08 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -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);
 }