diff mbox series

[09/18] smartpqi: avoid drive spin-down during suspend

Message ID 164375211330.440833.7203813692110347698.stgit@brunhilda.pdev.net
State New
Headers show
Series smartpqi updates | expand

Commit Message

Don Brace Feb. 1, 2022, 9:48 p.m. UTC 
From: Sagar Biradar <sagar.biradar@microchip.com>

Avoid drive spin-down during system RESTARTs.

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.

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>
---
 drivers/scsi/smartpqi/smartpqi_init.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
diff mbox series

Patch

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);