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| author | Kevin Barnett <kevin.barnett@microsemi.com> | 2017-08-10 20:47:03 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-08-11 01:58:26 +0200 |
| commit | b6d478119edeaca964b46796fd26893b81f8a561 (patch) | |
| tree | 07a44042a09e12bf30bbd8bf8f70db1fd535c105 /drivers/scsi/smartpqi | |
| parent | scsi: smartpqi: cleanup doorbell register usage. (diff) | |
| download | linux-b6d478119edeaca964b46796fd26893b81f8a561.tar.xz linux-b6d478119edeaca964b46796fd26893b81f8a561.zip | |
scsi: smartpqi: update kexec and power down support
Add PQI reset to driver shutdown callback to work around controller bug.
During an 1.) OS shutdown or 2.) kexec outside of a kdump, the Linux
kernel will clear BME on our controller.
If BME is cleared during a controller/host PCIe transfer, the controller
will lock up.
So we perform a PQI reset in the driver's shutdown callback function to
eliminate the possibility of a controller/host PCIe transfer being
active when the kernel clears BME immediately after calling the driver's
shutdown callback.
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Signed-off-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>
Diffstat (limited to 'drivers/scsi/smartpqi')
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi_init.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 70b1f97daee8..afd3eed83044 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -6700,6 +6700,7 @@ static void pqi_shutdown(struct pci_dev *pci_dev) * storage. */ rc = pqi_flush_cache(ctrl_info, SHUTDOWN); + pqi_reset(ctrl_info); if (rc == 0) return; |