From: Hans de Goede Date: Fri, 16 Feb 2018 09:48:20 +0000 (+0100) Subject: libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=399ae5ba263e672bf105414f8e71adc9ff223134;hp=706a681ca0e882764ae549e5df26826d16cf9101 libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs commit 9c7be59fc519af9081c46c48f06f2b8fadf55ad8 upstream. Various people have reported the Crucial MX100 512GB model not working with LPM set to min_power. I've now received a report that it also does not work with the new med_power_with_dipm level. It does work with medium_power, but that has no measurable power-savings and given the amount of people being bitten by the other levels not working, this commit just disables LPM altogether. Note all reporters of this have either the 512GB model (max capacity), or are not specifying their SSD's size. So for now this quirk assumes this is a problem with the 512GB model only. Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=89261 Buglink: https://github.com/linrunner/TLP/issues/84 Signed-off-by: Hans de Goede Signed-off-by: Tejun Heo [bwh: Backported to 3.2: Drop the TRIM quirk flags, which aren't supported] Signed-off-by: Ben Hutchings --- diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 8ad7e8447d84..0162c9de4fd7 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -4155,6 +4155,9 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { { "PIONEER DVD-RW DVR-212D", NULL, ATA_HORKAGE_NOSETXFER }, { "PIONEER DVD-RW DVR-216D", NULL, ATA_HORKAGE_NOSETXFER }, + /* The 512GB version of the MX100 has LPM issues */ + { "Crucial_CT512MX100*", NULL, ATA_HORKAGE_NOLPM, }, + /* devices that don't properly handle TRIM commands */ { "SuperSSpeed S238*", NULL, ATA_HORKAGE_NOTRIM, },