3.19.8-ckt4 -stable review patch.  If anyone has any objections, please let me 
know.

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

From: "Martin K. Petersen" <martin.peter...@oracle.com>

commit 243918be6393f643e513a26e7882e6ae06ff7717 upstream.

Queued TRIM got disabled on Micron M500DC drives thanks to the
"Micron_M500*" pattern we had in place to accommodate the previous
generation of this drive family. Tweak the blacklist entry slightly so
we only disable queued TRIM for the non-DC variants of M500 drives.

Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Tejun Heo <t...@kernel.org>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
 drivers/ata/libata-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 0b8d57c..0f762ab 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4233,7 +4233,7 @@ static const struct ata_blacklist_entry 
ata_device_blacklist [] = {
        { "PIONEER DVD-RW  DVR-216D",   NULL,   ATA_HORKAGE_NOSETXFER },
 
        /* devices that don't properly handle queued TRIM commands */
-       { "Micron_M500*",               NULL,   ATA_HORKAGE_NO_NCQ_TRIM |
+       { "Micron_M500_*",              NULL,   ATA_HORKAGE_NO_NCQ_TRIM |
                                                ATA_HORKAGE_ZERO_AFTER_TRIM, },
        { "Crucial_CT*M500*",           NULL,   ATA_HORKAGE_NO_NCQ_TRIM |
                                                ATA_HORKAGE_ZERO_AFTER_TRIM, },
-- 
1.9.1

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