> I want to introduce a new function to sys/devices.h:
>
> bool device_is_attached(device_t parent, cfdata_t cf);
this doesn't seem to match what the function actually does, which
is answer the question "does this parent bus have a child attached
with the same driver name as in cf->cf_name".
that doesn't handle the more interesting cases i can think of such
as "does this pci bus have something at device 4 function 1", which
is a question i'd expect "device_is_attached{,_p}()" to answer. ie,
it is limited to fake busses AFAICT.
i don't think we should adopt this function in sys/device.h.
.mrg.
