[PATCH 04/18] smartpqi: eliminate drive spin down on warm boot
From: Don Brace <don.brace@microchip.com>
Date: 2022-02-01 21:48:10
Subsystem:
microsemi smart array smartpqi driver (smartpqi), scsi subsystem, the rest · Maintainers:
Don Brace, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
From: Sagar Biradar <redacted> 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 <redacted> Reviewed-by: Scott Benesh <redacted> Reviewed-by: Scott Teel <redacted> Signed-off-by: Sagar Biradar <redacted> Signed-off-by: Don Brace <don.brace@microchip.com> --- drivers/scsi/smartpqi/smartpqi_init.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
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");