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scsi: smartpqi: correct volume status 

- fix race condition when a unit is deleted after an RLL,
  and before we have gotten the LV_STATUS page of the unit.
  - In this case we will get a standard inquiry, rather than
    the desired page.  This will result in a unit presented
    which no longer exists.
  - If we ask for LV_STATUS, insure we get LV_STATUS

Reviewed-by: Murthy Bhat <murthy.bhat@microsemi.com>
Reviewed-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
hifive-unleashed-5.1
Dave Carroll 2018-12-07 16:29:45 -06:00 committed by Martin K. Petersen
parent a9a681017c
commit 7ff44499ba
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/smartpqi/smartpqi_init.c
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@ -1270,6 +1270,9 @@ static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
if (rc)
goto out;
if (vpd->page_code != CISS_VPD_LV_STATUS)
goto out;
page_length = offsetof(struct ciss_vpd_logical_volume_status,
volume_status) + vpd->page_length;
if (page_length < sizeof(*vpd))