lkml.org 
[lkml]   [2018]   [May]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    Subject[PATCH 3.2 099/153] libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs
    3.2.102-rc1 review patch.  If anyone has any objections, please let me know.

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

    From: Hans de Goede <hdegoede@redhat.com>

    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 <hdegoede@redhat.com>
    Signed-off-by: Tejun Heo <tj@kernel.org>
    [bwh: Backported to 3.2: Drop the TRIM quirk flags, which aren't supported]
    Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
    ---
    --- a/drivers/ata/libata-core.c
    +++ b/drivers/ata/libata-core.c
    @@ -4155,6 +4155,9 @@ static const struct ata_blacklist_entry
    { "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, },

    \
     
     \ /
      Last update: 2018-05-30 13:37    [W:4.731 / U:0.024 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site