scsi: hisi_sas: Add more logs for runtime suspend/resume

Add some logs at the beginning and end of suspend/resume.

Link: https://lore.kernel.org/r/1639999298-244569-9-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>

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 63059fb..6d7fde3 100644 (file)
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -4904,6 +4904,8 @@ static int _suspend_v3_hw(struct device *device)
        if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags))
                return -1;
 
+       dev_warn(dev, "entering suspend state\n");
+
        scsi_block_requests(shost);
        set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
        flush_workqueue(hisi_hba->wq);
@@ -4919,11 +4921,11 @@ static int _suspend_v3_hw(struct device *device)
 
        hisi_sas_init_mem(hisi_hba);
 
-       dev_warn(dev, "entering suspend state\n");
-
        hisi_sas_release_tasks(hisi_hba);
 
        sas_suspend_ha(sha);
+
+       dev_warn(dev, "end of suspending controller\n");
        return 0;
 }
 
@@ -4961,6 +4963,8 @@ static int _resume_v3_hw(struct device *device)
        sas_resume_ha_no_sync(sha);
        clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags);
 
+       dev_warn(dev, "end of resuming controller\n");
+
        return 0;
 }