diff mbox series

[04/18] smartpqi: eliminate drive spin down on warm boot

Message ID 164375208810.440833.11254644025650871435.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 a warm boot on Linux.

Call the BMIC Flush Cache command (0xc2) to indicate the reason for
the flush cache (shutdown, hibernate, suspend, or restart).

Reviewed-by: Mike McGowen <mike.mcgowen@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 |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index ad9fa1628a69..f51605cd098c 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -8902,6 +8902,7 @@  static void pqi_shutdown(struct pci_dev *pci_dev)
 {
 	int rc;
 	struct pqi_ctrl_info *ctrl_info;
+	enum bmic_flush_cache_shutdown_event shutdown_event;
 
 	ctrl_info = pci_get_drvdata(pci_dev);
 	if (!ctrl_info) {
@@ -8917,11 +8918,16 @@  static void pqi_shutdown(struct pci_dev *pci_dev)
 	pqi_ctrl_block_requests(ctrl_info);
 	pqi_ctrl_wait_until_quiesced(ctrl_info);
 
+	if (system_state == SYSTEM_RESTART)
+		shutdown_event = RESTART;
+	else
+		shutdown_event = SHUTDOWN;
+
 	/*
 	 * Write all data in the controller's battery-backed cache to
 	 * storage.
 	 */
-	rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
+	rc = pqi_flush_cache(ctrl_info, shutdown_event);
 	if (rc)
 		dev_err(&pci_dev->dev,
 			"unable to flush controller cache\n");