linux-kernel - [PATCH v2 2/2] scsi: ufs: no need to send one Abort Task TM in case the task in DB was cleared

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Message-Id: <20200811141859.27399-3-huobean@gmail.com>
Date:   Tue, 11 Aug 2020 16:18:59 +0200
From:   Bean Huo <huobean@...il.com>
To:     alim.akhtar@...sung.com, avri.altman@....com,
        asutoshd@...eaurora.org, jejb@...ux.ibm.com,
        martin.petersen@...cle.com, stanley.chu@...iatek.com,
        beanhuo@...ron.com, bvanassche@....org, tomas.winkler@...el.com,
        cang@...eaurora.org
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] scsi: ufs: no need to send one Abort Task TM in case the task in DB was cleared

From: Bean Huo <beanhuo@...ron.com>

If the bit corresponds to a task in the Doorbell register has been
cleared, no need to poll the status of the task on the device side
and to send an Abort Task TM. Instead, let it directly goto cleanup.

Meanwhile, to keep original debug print, move this goto below the debug
print.

Signed-off-by: Bean Huo <beanhuo@...ron.com>
---
 drivers/scsi/ufs/ufshcd.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 66fe814c8725..5f09cda7b21c 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -6434,14 +6434,8 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
 		goto out;
 	}
 
-	if (!(reg & (1 << tag))) {
-		dev_err(hba->dev,
-		"%s: cmd was completed, but without a notifying intr, tag = %d",
-		__func__, tag);
-	}
-
 	/* Print Transfer Request of aborted task */
-	dev_err(hba->dev, "%s: Device abort task at tag %d\n", __func__, tag);
+	dev_info(hba->dev, "%s: Device abort task at tag %d\n", __func__, tag);
 
 	/*
 	 * Print detailed info about aborted request.
@@ -6462,6 +6456,13 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
 	}
 	hba->req_abort_count++;
 
+	if (!(reg & (1 << tag))) {
+		dev_err(hba->dev,
+		"%s: cmd was completed, but without a notifying intr, tag = %d",
+		__func__, tag);
+		goto cleanup;
+	}
+
 	/* Skip task abort in case previous aborts failed and report failure */
 	if (lrbp->req_abort_skip) {
 		err = -EIO;
-- 
2.17.1