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authorHans de Goede <hdegoede@redhat.com>2018-03-19 16:33:58 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-03-28 18:39:21 +0200
commita7262d24ab62e92728b7c3fbbd85b718a81ce865 (patch)
tree358b58aae1931a45a7e8b626d75fe9614704ef3e /drivers/ata
parentdb4a121a8939ec1d24efe38e3405dc9776c6b925 (diff)
libata: Apply NOLPM quirk to Crucial M500 480 and 960GB SSDs
commit 62ac3f7305470e3f52f159de448bc1a771717e88 upstream. There have been reports of the Crucial M500 480GB model not working with LPM set to min_power / med_power_with_dipm level. It has not been tested with medium_power, but that typically has no measurable power-savings. Note the reporters Crucial_CT480M500SSD3 has a firmware version of MU03 and there is a MU05 update available, but that update does not mention any LPM fixes in its changelog, so the quirk matches all firmware versions. In my experience the LPM problems with (older) Crucial SSDs seem to be limited to higher capacity versions of the SSDs (different firmware?), so this commit adds a NOLPM quirk for the 480 and 960GB versions of the M500, to avoid LPM causing issues with these SSDs. Cc: stable@vger.kernel.org Reported-and-tested-by: Martin Steigerwald <martin@lichtvoll.de> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 1f4810ea33c5..cf84a52ed20e 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4411,6 +4411,14 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
ATA_HORKAGE_ZERO_AFTER_TRIM |
ATA_HORKAGE_NOLPM, },
+ /* 480GB+ M500 SSDs have both queued TRIM and LPM issues */
+ { "Crucial_CT480M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM |
+ ATA_HORKAGE_NOLPM, },
+ { "Crucial_CT960M500*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
+ ATA_HORKAGE_ZERO_AFTER_TRIM |
+ ATA_HORKAGE_NOLPM, },
+
/* devices that don't properly handle queued TRIM commands */
{ "Micron_M500_*", NULL, ATA_HORKAGE_NO_NCQ_TRIM |
ATA_HORKAGE_ZERO_AFTER_TRIM, },