ENXIOing non-present battery

[Dan Lukes]

On 12/09/14 06:33, Ian Smith:
> Normally with 2 batteries catered for and only one fitted you'd expect to see

> battery1: <ACPI Control Method Battery> on acpi0
> battery1: battery initialization start
> battery1: battery initialization failed, giving up

Just for the completeness ...

... it is expected behavior for non-present battery. Relevant part of 
code (sys/dev/acpica/acpi_cmbat.c):

>     ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
>                 "battery initialization start\n");
...
>     for (retry = 0; retry < ACPI_CMBAT_RETRY_MAX; retry++, AcpiOsSleep(10000)) {
...
>         if (!acpi_BatteryIsPresent(dev))
>             continue;
...
>     }
>
>     if (retry == ACPI_CMBAT_RETRY_MAX) {
>         ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
>                     "battery initialization failed, giving up\n");



Dan