diff options
| author | Sagar Biradar <sagar.biradar@microchip.com> | 2022-02-01 15:48:33 -0600 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-07 23:38:35 -0500 |
| commit | b73357a1fd39cec82b654421110e35e8167930d5 (patch) | |
| tree | 4ac36a5a5bb791e1548232a80959030a8476f7c7 /drivers/scsi/smartpqi | |
| parent | 42dc0426fbbbe380c83976e7601f23de0034249d (diff) | |
| download | linux-b73357a1fd39cec82b654421110e35e8167930d5.tar.bz2 | |
scsi: smartpqi: Avoid drive spin-down during suspend
On certain systems (based on PCI IDs), when the OS transitions the system
into the suspend (S3) state, the BMIC flush cache command will indicate a
system RESTART instead of SUSPEND.
This avoids drive spin-down.
Link: https://lore.kernel.org/r/164375211330.440833.7203813692110347698.stgit@brunhilda.pdev.net
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Sagar Biradar <sagar.biradar@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.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 | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index b32a5a5a5c21..ab12507da436 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -8976,10 +8976,19 @@ static void pqi_process_module_params(void) pqi_process_lockup_action_param(); } +static inline enum bmic_flush_cache_shutdown_event pqi_get_flush_cache_shutdown_event(struct pci_dev *pci_dev) +{ + if (pci_dev->subsystem_vendor == PCI_VENDOR_ID_ADAPTEC2 && pci_dev->subsystem_device == 0x1304) + return RESTART; + return SUSPEND; +} + static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state) { struct pqi_ctrl_info *ctrl_info; + enum bmic_flush_cache_shutdown_event shutdown_event; + shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev); ctrl_info = pci_get_drvdata(pci_dev); pqi_wait_until_ofa_finished(ctrl_info); @@ -8989,7 +8998,7 @@ static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t stat pqi_ctrl_block_device_reset(ctrl_info); pqi_ctrl_block_requests(ctrl_info); pqi_ctrl_wait_until_quiesced(ctrl_info); - pqi_flush_cache(ctrl_info, SUSPEND); + pqi_flush_cache(ctrl_info, shutdown_event); pqi_stop_heartbeat_timer(ctrl_info); pqi_crash_if_pending_command(ctrl_info); |