scsi: hisi_sas: Wait until error handling is complete

SATA devices are lost when FLR is performed while the controller and disks
are in suspended state.

This is because the libata layer is called to initialize the SATA device
during controller resume. If FLR is executed at this time, the IDENTIFY
command fails. As a result, the revalidate fails, and the SATA device is
disabled by the libata layer.

Wait until error handling completes.

Signed-off-by: Yihang Li <liyihang9@huawei.com>
Link: https://lore.kernel.org/r/20250414080845.1220997-5-liyihang9@huawei.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 15f1d5d783cb210de5eb28efe28d59936b52c769..d7a5522890a3bb9c3299ab86a4d6e68614989e06 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -5100,9 +5100,11 @@ static void hisi_sas_reset_prepare_v3_hw(struct pci_dev *pdev)
 {
        struct sas_ha_struct *sha = pci_get_drvdata(pdev);
        struct hisi_hba *hisi_hba = sha->lldd_ha;
+       struct Scsi_Host *shost = hisi_hba->shost;
        struct device *dev = hisi_hba->dev;
        int rc;
 
+       wait_event(shost->host_wait, !scsi_host_in_recovery(shost));
        dev_info(dev, "FLR prepare\n");
        down(&hisi_hba->sem);
        set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags);