From: Xiang Chen <chenxiang66@hisilicon.com>
Date: Wed, 7 Mar 2018 20:25:10 +0800
Subject: scsi: hisi_sas: remove unused variable hisi_sas_devices.running_req
Git-commit: 36996a1e6dff4e5835faeb00ba920ccb9a07aa52
Patch-mainline: v4.17-rc1
References: FATE#326253

The structure element hisi_sas_devices.running_req to count how many
commands are active is in effect only ever written in the code, so remove
it.

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.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.h       | 1 -
 drivers/scsi/hisi_sas/hisi_sas_main.c  | 9 ---------
 drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 3 ---
 3 files changed, 13 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index e7fd2877c19c..d1153e8e846b 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -175,7 +175,6 @@ struct hisi_sas_device {
 	struct hisi_sas_dq	*dq;
 	struct list_head	list;
 	u64 attached_phy;
-	atomic64_t running_req;
 	enum sas_device_type	dev_type;
 	int device_id;
 	int sata_idx;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 9ff87902d67a..88ad8d42ef6f 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -200,8 +200,6 @@ void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
 
 	if (task) {
 		struct device *dev = hisi_hba->dev;
-		struct domain_device *device = task->dev;
-		struct hisi_sas_device *sas_dev = device->lldd_dev;
 
 		if (!task->lldd_task)
 			return;
@@ -213,9 +211,6 @@ void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
 				dma_unmap_sg(dev, task->scatter,
 					     task->num_scatter,
 					     task->data_dir);
-
-		if (sas_dev)
-			atomic64_dec(&sas_dev->running_req);
 	}
 
 	if (slot->buf)
@@ -431,8 +426,6 @@ static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
 	spin_unlock_irqrestore(&task->task_state_lock, flags);
 
 	dq->slot_prep = slot;
-
-	atomic64_inc(&sas_dev->running_req);
 	++(*pass);
 
 	return 0;
@@ -1517,8 +1510,6 @@ hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
 
 	dq->slot_prep = slot;
 
-	atomic64_inc(&sas_dev->running_req);
-
 	/* send abort command to the chip */
 	hisi_hba->hw->start_delivery(dq);
 	spin_unlock_irqrestore(&dq->lock, flags_dq);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 2eb89806c512..8dd0e6a6ff8a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -1407,9 +1407,6 @@ static int slot_complete_v1_hw(struct hisi_hba *hisi_hba,
 	}
 
 out:
-	if (sas_dev)
-		atomic64_dec(&sas_dev->running_req);
-
 	hisi_sas_slot_task_free(hisi_hba, task, slot);
 	sts = ts->stat;