From: Xiang Chen <chenxiang66@xxxxxxxxxxxxx> For some scenarios, it may send many IOs in a short time, then SAS controller will enter suspend and resume frequently which is invalid. To avoid it, use autosuspend mode for SAS controller and set default autosuspend delay time to 5s. Signed-off-by: Xiang Chen <chenxiang66@xxxxxxxxxxxxx> Signed-off-by: John Garry <john.garry@xxxxxxxxxx> --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index a5695ae8b73b..d96fe636e984 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -4777,6 +4777,8 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id) scsi_scan_host(shost); + pm_runtime_set_autosuspend_delay(dev, 5000); + pm_runtime_use_autosuspend(dev); /* * For the situation that there are ATA disks connected with SAS * controller, it additionally creates ata_port which will affect the -- 2.33.0
