| Message ID | 20180126150300.9691-3-hdegoede@redhat.com |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | [v3,1/5] ACPI: export acpi_bus_get_status_handle() | expand |
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index d44d2c287b91..433bb5a3f327 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -120,6 +120,12 @@ int acpi_bus_get_status(struct acpi_device *device) 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;
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> --- drivers/acpi/bus.c | 6 ++++++ 1 file changed, 6 insertions(+)