acpiwmibus at acpiwmi0 not configured

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

I notice a line
	acpiwmibus at acpiwmi0 not configured
in the autoconf messages.
Indeed, my kernel config has
	acpiwmi* at acpi?
and
	wmidell* at acpiwmibus?
but no attachment for any acpiwmibus, nor does any other kernel config.

Is there something magic about acpiwmibus or are the configs simply missing 
an appropriate line?