• Kyle Evans's avatar
    hp-wmi: Enable hotkeys on some systems · f82bdd0d
    Kyle Evans authored
    This is a third attempt to enable these buttons. The new variable being
    commit 997daa1b
    
     (i.e. hp-wmi: detect
    "2009 BIOS or later"). Older systems that do not have the 2009 BIOS query
    method respond with a dummy value, in this case 4. Using that, we can
    target a fairly narrow group of systems. i.e. old enough to not have
    HPWMI_FEATURE_QUERY 0xd, but new enough to have HPWMI_BIOS_QUERY 0x9.
    This group may be further limited if some systems respond with something
    other than 4 to non-existant feature queries.
    Signed-off-by: default avatarKyle Evans <kvans32@gmail.com>
    Signed-off-by: default avatarMatthew Garrett <matthew.garrett@nebula.com>
    f82bdd0d