From: Xiaofei Tan <tanxiaofei@huawei.com>
Date: Sat, 9 Dec 2017 01:16:47 +0800
Subject: scsi: hisi_sas: add internal abort dev in some places
Git-commit: 2a03813123c4beb0b60be6b3b65a6b30f7124579
Patch-mainline: v4.16-rc1
References: FATE#326253

We should do internal abort dev before TMF_ABORT_TASK_SET and TMF_LU_RESET.
Because we may only have done internal abort for single IO in the earlier part
of SCSI EH process. Even the internal abort to the single IO, we also don't
know whether it is successful.

Besides, we should release slots of the device in hisi_sas_abort_task_set() if
the abort is successful.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 drivers/scsi/hisi_sas/hisi_sas_main.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 1b9c48c99968..302da84bf9ef 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1238,12 +1238,29 @@ static int hisi_sas_abort_task(struct sas_task *task)
 
 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
 {
+	struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
+	struct device *dev = hisi_hba->dev;
 	struct hisi_sas_tmf_task tmf_task;
 	int rc = TMF_RESP_FUNC_FAILED;
+	unsigned long flags;
+
+	rc = hisi_sas_internal_task_abort(hisi_hba, device,
+					HISI_SAS_INT_ABT_DEV, 0);
+	if (rc < 0) {
+		dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
+		return TMF_RESP_FUNC_FAILED;
+	}
+	hisi_sas_dereg_device(hisi_hba, device);
 
 	tmf_task.tmf = TMF_ABORT_TASK_SET;
 	rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
 
+	if (rc == TMF_RESP_FUNC_COMPLETE) {
+		spin_lock_irqsave(&hisi_hba->lock, flags);
+		hisi_sas_release_task(hisi_hba, device);
+		spin_unlock_irqrestore(&hisi_hba->lock, flags);
+	}
+
 	return rc;
 }
 
@@ -1333,6 +1350,14 @@ static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
 	} else {
 		struct hisi_sas_tmf_task tmf_task = { .tmf =  TMF_LU_RESET };
 
+		rc = hisi_sas_internal_task_abort(hisi_hba, device,
+						HISI_SAS_INT_ABT_DEV, 0);
+		if (rc < 0) {
+			dev_err(dev, "lu_reset: internal abort failed\n");
+			goto out;
+		}
+		hisi_sas_dereg_device(hisi_hba, device);
+
 		rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
 		if (rc == TMF_RESP_FUNC_COMPLETE) {
 			spin_lock_irqsave(&hisi_hba->lock, flags);