linux-kernel - [PATCH AUTOSEL 4.9 08/16] scsi: pm8001: Fix pm8001_mpi_task_abort

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Message-Id: <20220401144827.1955845-8-sashal@kernel.org>
Date:   Fri,  1 Apr 2022 10:48:19 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Jack Wang <jinpu.wang@...os.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <sashal@...nel.org>, jinpu.wang@...ud.ionos.com,
        jejb@...ux.ibm.com, linux-scsi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.9 08/16] scsi: pm8001: Fix pm8001_mpi_task_abort_resp()

From: Damien Le Moal <damien.lemoal@...nsource.wdc.com>

[ Upstream commit 7e6b7e740addcea450041b5be8e42f0a4ceece0f ]

The call to pm8001_ccb_task_free() at the end of
pm8001_mpi_task_abort_resp() already frees the ccb tag. So when the device
NCQ_ABORT_ALL_FLAG is set, the tag should not be freed again.  Also change
the hardcoded 0xBFFFFFFF value to ~NCQ_ABORT_ALL_FLAG as it ought to be.

Link: https://lore.kernel.org/r/20220220031810.738362-19-damien.lemoal@opensource.wdc.com
Reviewed-by: Jack Wang <jinpu.wang@...os.com>
Signed-off-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/scsi/pm8001/pm8001_hwi.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index f374abfb7f1f..f5c7fffec081 100644
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -3766,12 +3766,11 @@ int pm8001_mpi_task_abort_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
 	mb();
 
 	if (pm8001_dev->id & NCQ_ABORT_ALL_FLAG) {
-		pm8001_tag_free(pm8001_ha, tag);
 		sas_free_task(t);
-		/* clear the flag */
-		pm8001_dev->id &= 0xBFFFFFFF;
-	} else
+		pm8001_dev->id &= ~NCQ_ABORT_ALL_FLAG;
+	} else {
 		t->task_done(t);
+	}
 
 	return 0;
 }
-- 
2.34.1