hello,
 this is the first time I write here :)
I  discovered hotplog recently because devfs is no longer a "standard"
the first thing I tried is coldplug and..... nothing worked..... I 
looked into the sources and find the problem in pci.rc
the pci.rc snapshot included here solve this issue and now coldplug work 
on my pc.
It has the advantage of using only /proc and awk to generate the 
pciID/vendorID
best regards