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scsi: hpsa: cleanup reset handler 

- mark device state sooner.

Reviewed-by: Scott Benesh <scott.benesh@microsemi.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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Don Brace 2017-05-04 17:51:22 -05:00 committed by Martin K. Petersen
parent d2315ce6e3
commit c59d04f30d
2 changed files with 46 additions and 14 deletions
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59
drivers/scsi/hpsa.c
View File

@ -1859,10 +1859,13 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h,
* A reset can cause a device status to change
* re-schedule the scan to see what happened.
*/
spin_lock_irqsave(&h->reset_lock, flags);
if (h->reset_in_progress) {
h->drv_req_rescan = 1;
spin_unlock_irqrestore(&h->reset_lock, flags);
return;
}
spin_unlock_irqrestore(&h->reset_lock, flags);
added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
@ -5618,11 +5621,14 @@ static void hpsa_scan_start(struct Scsi_Host *sh)
/*
* Do the scan after a reset completion
*/
spin_lock_irqsave(&h->reset_lock, flags);
if (h->reset_in_progress) {
h->drv_req_rescan = 1;
spin_unlock_irqrestore(&h->reset_lock, flags);
hpsa_scan_complete(h);
return;
}
spin_unlock_irqrestore(&h->reset_lock, flags);
hpsa_update_scsi_devices(h);
@ -5834,28 +5840,38 @@ static int wait_for_device_to_become_ready(struct ctlr_info *h,
*/
static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
{
int rc;
int rc = SUCCESS;
struct ctlr_info *h;
struct hpsa_scsi_dev_t *dev;
u8 reset_type;
char msg[48];
unsigned long flags;
/* find the controller to which the command to be aborted was sent */
h = sdev_to_hba(scsicmd->device);
if (h == NULL) /* paranoia */
return FAILED;
if (lockup_detected(h))
return FAILED;
spin_lock_irqsave(&h->reset_lock, flags);
h->reset_in_progress = 1;
spin_unlock_irqrestore(&h->reset_lock, flags);
if (lockup_detected(h)) {
rc = FAILED;
goto return_reset_status;
}
dev = scsicmd->device->hostdata;
if (!dev) {
dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
return FAILED;
rc = FAILED;
goto return_reset_status;
}
if (dev->devtype == TYPE_ENCLOSURE)
return SUCCESS;
if (dev->devtype == TYPE_ENCLOSURE) {
rc = SUCCESS;
goto return_reset_status;
}
/* if controller locked up, we can guarantee command won't complete */
if (lockup_detected(h)) {
@ -5863,7 +5879,8 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
"cmd %d RESET FAILED, lockup detected",
hpsa_get_cmd_index(scsicmd));
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
return FAILED;
rc = FAILED;
goto return_reset_status;
}
/* this reset request might be the result of a lockup; check */
@ -5872,12 +5889,15 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
"cmd %d RESET FAILED, new lockup detected",
hpsa_get_cmd_index(scsicmd));
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
return FAILED;
rc = FAILED;
goto return_reset_status;
}
/* Do not attempt on controller */
if (is_hba_lunid(dev->scsi3addr))
return SUCCESS;
if (is_hba_lunid(dev->scsi3addr)) {
rc = SUCCESS;
goto return_reset_status;
}
if (is_logical_dev_addr_mode(dev->scsi3addr))
reset_type = HPSA_DEVICE_RESET_MSG;
@ -5888,17 +5908,24 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ");
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
h->reset_in_progress = 1;
/* send a reset to the SCSI LUN which the command was sent to */
rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type,
DEFAULT_REPLY_QUEUE);
if (rc == 0)
rc = SUCCESS;
else
rc = FAILED;
sprintf(msg, "reset %s %s",
reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ",
rc == 0 ? "completed successfully" : "failed");
rc == SUCCESS ? "completed successfully" : "failed");
hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
return_reset_status:
spin_lock_irqsave(&h->reset_lock, flags);
h->reset_in_progress = 0;
return rc == 0 ? SUCCESS : FAILED;
spin_unlock_irqrestore(&h->reset_lock, flags);
return rc;
}
static void swizzle_abort_tag(u8 *tag)
@ -8649,10 +8676,13 @@ static void hpsa_rescan_ctlr_worker(struct work_struct *work)
/*
* Do the scan after the reset
*/
spin_lock_irqsave(&h->reset_lock, flags);
if (h->reset_in_progress) {
h->drv_req_rescan = 1;
spin_unlock_irqrestore(&h->reset_lock, flags);
return;
}
spin_unlock_irqrestore(&h->reset_lock, flags);
if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
scsi_host_get(h->scsi_host);
@ -8759,6 +8789,7 @@ reinit_after_soft_reset:
spin_lock_init(&h->lock);
spin_lock_init(&h->offline_device_lock);
spin_lock_init(&h->scan_lock);
spin_lock_init(&h->reset_lock);
atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);

1
drivers/scsi/hpsa.h
View File

@ -301,6 +301,7 @@ struct ctlr_info {
struct mutex reset_mutex;
u8 reset_in_progress;
struct hpsa_sas_node *sas_host;
spinlock_t reset_lock;
};
struct offline_device_entry {