• Andy Lutomirski's avatar
    nvme: Adjust the Samsung APST quirk · ff5350a8
    Andy Lutomirski authored
    I got a couple more reports: the Samsung APST issues appears to
    affect multiple 950-series devices in Dell XPS 15 9550 and Precision
    5510 laptops.  Change the quirk: rather than blacklisting the
    firmware on the first problematic SSD that was reported, disable
    APST on all 144d:a802 devices if they're installed in the two
    affected Dell models.  While we're at it, disable only the deepest
    sleep state instead of all of them -- the reporters say that this is
    sufficient to fix the problem.
    
    (I have a device that appears to be entirely identical to one of the
    affected devices, but I have a different Dell laptop, so it's not
    the case that all Samsung devices with firmware BXW75D0Q are broken
    under all circumstances.)
    
    Samsung engineers have an affected system, and hopefully they'll
    give us a better workaround some time soon.  In the mean time, this
    should minimize regressions.
    
    See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1678184
    
    Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
    Signed-off-by: default avatarAndy Lutomirski <luto@kernel.org>
    Signed-off-by: default avatarJens Axboe <axboe@fb.com>
    ff5350a8
core.c 60.1 KB