linux-kernel - [PATCH 3.18 046/185] scsi: ufs: Enable quirk to ignore sending WRITE

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Message-Id: <20180528100054.844517219@linuxfoundation.org>
Date:   Mon, 28 May 2018 12:01:27 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Sujit Reddy Thumma <sthumma@...eaurora.org>,
        Subhash Jadavani <subhashj@...eaurora.org>,
        Asutosh Das <asutoshd@...eaurora.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 3.18 046/185] scsi: ufs: Enable quirk to ignore sending WRITE_SAME command

3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sujit Reddy Thumma <sthumma@...eaurora.org>

[ Upstream commit 84af7e8b895088d89f246d6b0f82717fafdebf61 ]

WRITE_SAME command is not supported by UFS. Enable a quirk for the upper
level drivers to not send WRITE SAME command.

[mkp: botched patch, applied by hand]

Signed-off-by: Sujit Reddy Thumma <sthumma@...eaurora.org>
Signed-off-by: Subhash Jadavani <subhashj@...eaurora.org>
Signed-off-by: Asutosh Das <asutoshd@...eaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/scsi/ufs/ufshcd.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -2795,6 +2795,8 @@ static int ufshcd_slave_alloc(struct scs
 	/* REPORT SUPPORTED OPERATION CODES is not supported */
 	sdev->no_report_opcodes = 1;
 
+	/* WRITE_SAME command is not supported */
+	sdev->no_write_same = 1;
 
 	ufshcd_set_queue_depth(sdev);