ac = (struct acpi_ac *)acpi_driver_data(device);
status = acpi_remove_notify_handler(ac->handle,
ACPI_DEVICE_NOTIFY, acpi_ac_notify);
ac = (struct acpi_ac *)acpi_driver_data(device);
status = acpi_remove_notify_handler(ac->handle,
ACPI_DEVICE_NOTIFY, acpi_ac_notify);