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@ipfire.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
[ luis: backported to 3.16: adjusted context ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index ef37e80fe9d55ad362c5cbfff4a2ba8890746ee4..d9ea12a004bca77fb3c358b608fd200148d12483 100644 (file)
--- 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