• Zhang Rui's avatar
    ACPI: do not warn if _BQC does not exist · 7020bcb8
    Zhang Rui authored
    Starting from ACPI spec 3.0, it's only clarified that _BCM control
    method is required if _BCL is implemented. There is no word
    saying _BQC is required.
    
    And in ACPI spec 6.1 B.5.4, for _BQC, it is explicitly stated that
    "This optional method returns the current brightness level of a
    built-in display output device. If present, it must be set by
    the platform for initial brightness."
    
    Thus remove the obsolete warning message.
    Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    7020bcb8
scan.c 52.9 KB