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| author |   Luo Jiaxing <luojiaxing@huawei.com> | 2021-01-26 19:04:27 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-26 23:02:11 -0500 |
| commit | 6834ec8b23c3eb345936022d46179b9d371e2344 (patch) | |
| tree | b847bfdb407b52df2ce2cb25ce8c231c60c660b4 /drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | |
| parent | scsi: hisi_sas: Enable debugfs support by default (diff) | |
| download | linux-dev-6834ec8b23c3eb345936022d46179b9d371e2344.tar.xz linux-dev-6834ec8b23c3eb345936022d46179b9d371e2344.zip | |
scsi: hisi_sas: Flush workqueue in hisi_sas_v3_remove()
If the controller reset occurs at the same time as driver removal, it may
be possible that the interrupts have been released prior to the host
softreset, and calling pci_irq_vector() there causes a WARN:
WARNING: CPU: 37 PID: 1542 /pci/msi.c:1275 pci_irq_vector+0xc0/0xd0
Call trace:
pci_irq_vector+0xc0/0xd0
disable_host_v3_hw+0x58/0x5b0 [hisi_sas_v3_hw]
soft_reset_v3_hw+0x40/0xc0 [hisi_sas_v3_hw]
hisi_sas_controller_reset+0x150/0x260 [hisi_sas_main]
hisi_sas_rst_work_handler+0x3c/0x58 [hisi_sas_main]
To fix, flush the driver workqueue prior to releasing the interrupts to
ensure any resets have been completed.
Link: https://lore.kernel.org/r/1611659068-131975-5-git-send-email-john.garry@huawei.com
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.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 | 1 |
1 files changed, 1 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 e91df469e36b..4cc344ca121c 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -4572,6 +4572,7 @@ static void hisi_sas_v3_remove(struct pci_dev *pdev) del_timer(&hisi_hba->timer); sas_unregister_ha(sha); + flush_workqueue(hisi_hba->wq); sas_remove_host(sha->core.shost); hisi_sas_v3_destroy_irqs(pdev, hisi_hba); |