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authorHans de Goede <hdegoede@redhat.com>2018-01-26 16:02:59 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-02-04 09:11:56 +0100
commit63347db0affadcbccd5613116ea8431c70139b3e (patch)
treed12d751a129880c8a55a7fa155463e992fa288d2 /include
parent54ddce7062242036402242242c07c60c0b505f84 (diff)
downloadlinux-63347db0affadcbccd5613116ea8431c70139b3e.tar.bz2
ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs
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: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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