• Hans de Goede's avatar
    ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs · 63347db0
    Hans de Goede authored
    The acpi_get_bus_status wrapper for acpi_bus_get_status_handle has some
    code to handle certain device quirks, in some cases we also need this
    quirk handling for the initial _STA call.
    
    Specifically on some devices calling _STA before all _DEP dependencies
    are met results in errors like these:
    
    [    0.123579] ACPI Error: No handler for Region [ECRM] (00000000ba9edc4c)
                   [GenericSerialBus] (20170831/evregion-166)
    [    0.123601] ACPI Error: Region GenericSerialBus (ID=9) has no handler
                   (20170831/exfldio-299)
    [    0.123618] ACPI Error: Method parse/execution failed
                   \_SB.I2C1.BAT1._STA, AE_NOT_EXIST (20170831/psparse-550)
    
    acpi_get_bus_status already has code to avoid this, so by using it we
    also silence these errors from the initial _STA call.
    
    Note that in order for the acpi_get_bus_status handling for this to work,
    we initialize dep_unmet to 1 until acpi_device_dep_initialize gets called,
    this means that battery devices will be instantiated with an initial
    status of 0. This is not a problem, acpi_bus_attach will get called soon
    after the instantiation anyways and it will update the status as first
    point of order.
    Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    63347db0
scan.c 56.9 KB