From: Sagar Biradar <sagar.biradar@microchip.com>
Date: Tue, 1 Feb 2022 21:48:08 +0000 (-0600)
Subject: scsi: smartpqi: Eliminate drive spin down on warm boot
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=70ba20be4bb1f560bba7288bd12fbb918823e576;p=uclinux-h8%2Flinux.git

scsi: smartpqi: Eliminate drive spin down on warm boot

Avoid drive spin down during a warm boot.

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

Link: https://lore.kernel.org/r/164375208810.440833.11254644025650871435.stgit@brunhilda.pdev.net
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>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---

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");