acpica_devinfo_handler
status = AcpiGetData(obj, acpica_devinfo_handler, &ptr);
status = AcpiAttachData(obj, acpica_devinfo_handler, (void *)dip);
return (AcpiDetachData(obj, acpica_devinfo_handler));
static void acpica_devinfo_handler(ACPI_HANDLE, void *);