From: Luo Jiaxing <luojiax...@huawei.com>
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.
Signed-off-by: Luo Jiaxing <luojiax...@huawei.com>
Signed-off-by: John Garry <john.ga...@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 1 +
1 file changed, 1 insertion(+)
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);
--
2.26.2
