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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>
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@ -4783,6 +4783,8 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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scsi_scan_host(shost);
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pm_runtime_set_autosuspend_delay(dev, 5000);
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pm_runtime_use_autosuspend(dev);
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/*
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* For the situation that there are ATA disks connected with SAS
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* controller, it additionally creates ata_port which will affect the
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