yenta.c tries to allocate 2 bridge regions, each 4 MB: one for 
prefetchable memory, one for non-prefetchable memory.

The size of the regions must be adaptive: in my laptop, the cardbus 
bridge sits behind a pci bridge with a 1 MB bridge region :-(

The attached patch:
- limits the memory window to 1/8 of the window of the parent bridge 
(max 4 MB, min 16 kB)
- frees the resources during module unload
- adds error checking+printk

Please test it - my laptop now works.
Patch vs. 2.4.19, applies to 2.5.30, too.

--
	Manfred