FAILED: patch "[PATCH] scsi: ufs: core: Fix task management completion" failed to apply to 5.4-stable tree

index 188de6f91050..95be7ecdfe10 100644
@@ -6377,27 +6377,6 @@ static irqreturn_t ufshcd_check_errors(struct ufs_hba *hba, u32 intr_status)
 	return retval;
 }
 
-struct ctm_info {
-	struct ufs_hba	*hba;
-	unsigned long	pending;
-	unsigned int	ncpl;
-};
-
-static bool ufshcd_compl_tm(struct request *req, void *priv, bool reserved)
-{
-	struct ctm_info *const ci = priv;
-	struct completion *c;
-
-	WARN_ON_ONCE(reserved);
-	if (test_bit(req->tag, &ci->pending))
-		return true;
-	ci->ncpl++;
-	c = req->end_io_data;
-	if (c)
-		complete(c);
-	return true;
-}
-
 /**
  * ufshcd_tmc_handler - handle task management function completion
  * @hba: per adapter instance

@@ -6408,18 +6387,24 @@ static bool ufshcd_compl_tm(struct request *req, void *priv, bool reserved)
  */
 static irqreturn_t ufshcd_tmc_handler(struct ufs_hba *hba)
 {
-	unsigned long flags;
-	struct request_queue *q = hba->tmf_queue;
-	struct ctm_info ci = {
-		.hba	 = hba,
-	};
+	unsigned long flags, pending, issued;
+	irqreturn_t ret = IRQ_NONE;
+	int tag;
+
+	pending = ufshcd_readl(hba, REG_UTP_TASK_REQ_DOOR_BELL);
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
-	ci.pending = ufshcd_readl(hba, REG_UTP_TASK_REQ_DOOR_BELL);
-	blk_mq_tagset_busy_iter(q->tag_set, ufshcd_compl_tm, &ci);
+	issued = hba->outstanding_tasks & ~pending;
+	for_each_set_bit(tag, &issued, hba->nutmrs) {
+		struct request *req = hba->tmf_rqs[tag];
+		struct completion *c = req->end_io_data;
+
+		complete(c);
+		ret = IRQ_HANDLED;
+	}
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 
-	return ci.ncpl ? IRQ_HANDLED : IRQ_NONE;
+	return ret;
 }
 
 /**

@@ -6542,9 +6527,9 @@ static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba,
 	ufshcd_hold(hba, false);
 
 	spin_lock_irqsave(host->host_lock, flags);
-	blk_mq_start_request(req);
 
 	task_tag = req->tag;
+	hba->tmf_rqs[req->tag] = req;
 	treq->upiu_req.req_header.dword_0 |= cpu_to_be32(task_tag);
 
 	memcpy(hba->utmrdl_base_addr + task_tag, treq, sizeof(*treq));

@@ -6585,6 +6570,7 @@ static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba,
 	}
 
 	spin_lock_irqsave(hba->host->host_lock, flags);
+	hba->tmf_rqs[req->tag] = NULL;
 	__clear_bit(task_tag, &hba->outstanding_tasks);
 	spin_unlock_irqrestore(hba->host->host_lock, flags);
 

@@ -9635,6 +9621,12 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
 		err = PTR_ERR(hba->tmf_queue);
 		goto free_tmf_tag_set;
 	}
+	hba->tmf_rqs = devm_kcalloc(hba->dev, hba->nutmrs,
+				    sizeof(*hba->tmf_rqs), GFP_KERNEL);
+	if (!hba->tmf_rqs) {
+		err = -ENOMEM;
+		goto free_tmf_queue;
+	}
 
 	/* Reset the attached device */
 	ufshcd_device_reset(hba);

index f0da5d3db1fa..41f6e06f9185 100644
@@ -828,6 +828,7 @@ struct ufs_hba {
 
 	struct blk_mq_tag_set tmf_tag_set;
 	struct request_queue *tmf_queue;
+	struct request **tmf_rqs;
 
 	struct uic_command *active_uic_cmd;
 	struct mutex uic_cmd_mutex;