diff options
| author |   Xiang Chen <chenxiang66@hisilicon.com> | 2021-12-20 19:21:38 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2021-12-22 23:38:31 -0500 |
| commit | b4cc09492263e07bad4fc4bf34fed3246fa95057 (patch) | |
| tree | e151d47f5f90dea5ad3e4d0a77762cbe6af52313 /drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | |
| parent | scsi: libsas: Keep host active while processing events (diff) | |
| download | linux-dev-b4cc09492263e07bad4fc4bf34fed3246fa95057.tar.xz linux-dev-b4cc09492263e07bad4fc4bf34fed3246fa95057.zip | |
scsi: hisi_sas: Use autosuspend for the host controller
The controller may frequently enter and exit suspend for each I/O which we
need to deal with. This is inefficient and may cause too much suspend and
resume activity for the controller. To avoid this, use a default 5s
autosuspend for the controller to stop frequently suspending and
resuming. This value may still be modified via sysfs interfaces.
Link: https://lore.kernel.org/r/1639999298-244569-16-git-send-email-chenxiang66@hisilicon.com
Acked-by: John Garry <john.garry@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas_v3_hw.c')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 94eb48c93ab1..a45ef9a5e12e 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -4783,6 +4783,8 @@ 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 |