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author | Hans de Goede <hdegoede@redhat.com> | 2018-01-26 16:02:59 +0100 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-04 09:11:56 +0100 |
commit | 63347db0affadcbccd5613116ea8431c70139b3e (patch) | |
tree | d12d751a129880c8a55a7fa155463e992fa288d2 /arch/arm | |
parent | 54ddce7062242036402242242c07c60c0b505f84 (diff) | |
download | linux-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>
Diffstat (limited to 'arch/arm')
0 files changed, 0 insertions, 0 deletions