linux-kernel - [PATCH 3.4 027/107] libata: force disable trim for SuperSSpeed S238

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Date:	Wed, 16 Mar 2016 16:05:21 +0800
From:	lizf@...nel.org
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org,
	Arne Fitzenreiter <arne_f@...ire.org>,
	Tejun Heo <tj@...nel.org>, Zefan Li <lizefan@...wei.com>
Subject: [PATCH 3.4 027/107] libata: force disable trim for SuperSSpeed S238

From: Arne Fitzenreiter <arne_f@...ire.org>

3.4.111-rc1 review patch.  If anyone has any objections, please let me know.

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


commit cda57b1b05cf7b8b99ab4b732bea0b05b6c015cc upstream.

This device loses blocks, often the partition table area, on trim.
Disable TRIM.
http://pcengines.ch/msata16a.htm

Signed-off-by: Arne Fitzenreiter <arne_f@...ire.org>
Signed-off-by: Tejun Heo <tj@...nel.org>
Signed-off-by: Zefan Li <lizefan@...wei.com>
---
 drivers/ata/libata-core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index b5d532f..5a3b08b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4144,6 +4144,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	{ "WD My Book",			NULL,	ATA_HORKAGE_1_5_GBPS, },
 	{ "Seagate FreeAgent GoFlex",	NULL,	ATA_HORKAGE_1_5_GBPS, },
 
+	/* devices that don't properly handle TRIM commands */
+	{ "SuperSSpeed S238*",		NULL,	ATA_HORKAGE_NOTRIM, },
+
 	/*
 	 * Devices which choke on SETXFER.  Applies only if both the
 	 * device and controller are SATA.
-- 
1.9.1