[PATCH 1/5] smartpqi: take drives offline when controller is offline

[Don Brace <don.brace@microchip.com>]

From: David Strahan <david.strahan@microchip.com>

When the controller is unexpectedly taken offline, show its drives
as offline.

During a controller lockup, the physical and logical drives under the
locked up controller are still listed at the OS level.

I.E.
The controller is offline but the status of each drive is 'running'.

Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Signed-off-by: David Strahan <david.strahan@microchip.com>
Co-developed-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
---
 drivers/scsi/smartpqi/smartpqi_init.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 88135fdb8bd1..73f576ccf511 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -67,6 +67,7 @@ static struct pqi_cmd_priv *pqi_cmd_priv(struct scsi_cmnd *cmd)
 static void pqi_verify_structures(void);
 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
 	enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason);
+static void pqi_take_ctrl_devices_offline(struct pqi_ctrl_info *ctrl_info);
 static void pqi_ctrl_offline_worker(struct work_struct *work);
 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
 static void pqi_scan_start(struct Scsi_Host *shost);
@@ -9128,6 +9129,7 @@ static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
 	pqi_ctrl_wait_until_quiesced(ctrl_info);
 	pqi_fail_all_outstanding_requests(ctrl_info);
 	pqi_ctrl_unblock_requests(ctrl_info);
+	pqi_take_ctrl_devices_offline(ctrl_info);
 }
 
 static void pqi_ctrl_offline_worker(struct work_struct *work)
@@ -9202,6 +9204,27 @@ static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
 	schedule_work(&ctrl_info->ctrl_offline_work);
 }
 
+static void pqi_take_ctrl_devices_offline(struct pqi_ctrl_info *ctrl_info)
+{
+	int rc;
+	unsigned long flags;
+	struct pqi_scsi_dev *device;
+
+	spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
+	list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
+		rc = list_is_last(&device->scsi_device_list_entry, &ctrl_info->scsi_device_list);
+		if (rc)
+			continue;
+
+		/*
+		 * Is the sdev pointer NULL?
+		 */
+		if (device->sdev)
+			scsi_device_set_state(device->sdev, SDEV_OFFLINE);
+	}
+	spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
+}
+
 static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
 	const struct pci_device_id *id)
 {
-- 
2.49.0.391.g4bbb303af6