4.14-stable review patch. If anyone has any objections, please let me know.
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From: Hans de Goede hdegoede@redhat.com
[ Upstream commit 54ddce7062242036402242242c07c60c0b505f84 ]
The battery code uses acpi_device->dep_unmet to check for unmet deps and if there are unmet deps it does not bind to the device to avoid errors about missing OpRegions when calling ACPI methods on the device.
The missing OpRegions when there are unmet deps problem also applies to the _STA method of some battery devices and calling it too early 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)
This commit fixes these errors happening when acpi_get_bus_status gets called by checking dep_unmet for battery devices and reporting a status of 0 until all dependencies are met.
Signed-off-by: Hans de Goede hdegoede@redhat.com Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/acpi/bus.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -146,6 +146,12 @@ int acpi_bus_get_status(struct acpi_devi return 0; }
+ /* Battery devices must have their deps met before calling _STA */ + if (acpi_device_is_battery(device) && device->dep_unmet) { + acpi_set_device_status(device, 0); + return 0; + } + status = acpi_bus_get_status_handle(device->handle, &sta); if (ACPI_FAILURE(status)) return -ENODEV;