[3.16.y-ckt stable] Patch "libata: force disable trim for SuperSSpeed S238" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    libata: force disable trim for SuperSSpeed S238

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

    http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt16.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 742257bedbb60c2e1615fbc0f7217ae1370b4515 Mon Sep 17 00:00:00 2001
From: Arne Fitzenreiter <arne_f at ipfire.org>
Date: Wed, 15 Jul 2015 13:54:37 +0200
Subject: libata: force disable trim for SuperSSpeed S238

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 at ipfire.org>
Signed-off-by: Tejun Heo <tj at kernel.org>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.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 ef37e80fe9d5..d9ea12a004bc 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4232,6 +4232,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
 	{ "Crucial_CT*MX100*",		"MU01", ATA_HORKAGE_NO_NCQ_TRIM, },
 	{ "Samsung SSD 8*",		NULL,	ATA_HORKAGE_NO_NCQ_TRIM, },

+	/* devices that don't properly handle TRIM commands */
+	{ "SuperSSpeed S238*",		NULL,	ATA_HORKAGE_NOTRIM, },
+
 	/*
 	 * Some WD SATA-I drives spin up and down erratically when the link
 	 * is put into the slumber mode.  We don't have full list of the