Question on supporting multiple HW versions with a single driver (warning: long post)

[Bruce_Leonard at selinc.com]

> 
> There are a number of drivers which already have this sort of dual bus
> binding.
>

Thanks for the feedback David, I appreciate it.  Could you point me to one 
of those drivers that has "this sort of dual bus binding" so can see an 
example of what I'm trying to do?
 
Bruce