51 lines
2.0 KiB
Diff
51 lines
2.0 KiB
Diff
From e0aa96e89959951337e26802422de18a95a158b6 Mon Sep 17 00:00:00 2001
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From: Xiang Chen <chenxiang66@hisilicon.com>
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Date: Tue, 19 Apr 2022 17:07:07 +0800
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Subject: [PATCH 086/108] scsi: hisi_sas: Use autosuspend for the host
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controller
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mainline inclusion
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from mainline-v5.17-rc1
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commit b4cc09492263e07bad4fc4bf34fed3246fa95057
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category: feature
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bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8F803
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Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4cc09492263e07bad4fc4bf34fed3246fa95057
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----------------------------------------------------------------------
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The controller may frequently enter and exit suspend for each I/O which we
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need to deal with. This is inefficient and may cause too much suspend and
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resume activity for the controller. To avoid this, use a default 5s
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autosuspend for the controller to stop frequently suspending and
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resuming. This value may still be modified via sysfs interfaces.
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Link: https://lore.kernel.org/r/1639999298-244569-16-git-send-email-chenxiang66@hisilicon.com
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Acked-by: John Garry <john.garry@huawei.com>
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Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
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Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Signed-off-by: Fujai Ni<nifuijia1@hisilicon.com>
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Reviewed-by: Jason Yan <yanaijie@huawei.com>
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Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
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Signed-off-by: YunYi Yang <yangyunyi2@huawei.com>
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---
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drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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index dc076d1f7bb0..17b078abe2a8 100644
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--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
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@@ -5182,6 +5182,8 @@ 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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--
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2.27.0
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