acpi_install_cmos_rtc_space_handler
ret = acpi_install_cmos_rtc_space_handler(handle);
EXPORT_SYMBOL_GPL(acpi_install_cmos_rtc_space_handler);
return acpi_install_cmos_rtc_space_handler(adev->handle);
int acpi_install_cmos_rtc_space_handler(acpi_handle handle);