• Azael Avalos's avatar
    toshiba_acpi: Add extra check to backlight code · f6aac652
    Azael Avalos authored
    Some Toshiba models (most notably Qosmios) come with an
    incomplete backlight method where the AML code doesn't
    check for write or read commands and always returns
    HCI_SUCCESS and the actual brightness (and in some
    cases the max brightness), thus allowing the backlight
    interface to be registered without write support.
    This patch changes the set_lcd_brightness function,
    checking the returned values for values greater than
    zero to avoid registering a broken backlight interface.
    Signed-off-by: default avatarAzael Avalos <coproscefalo@gmail.com>
    Signed-off-by: default avatarMatthew Garrett <matthew.garrett@nebula.com>