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Date: Fri, 04 Feb 2005 09:36:54 -0700 (MST)
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To: dfr@qubesoft.com
From: "M. Warner Losh" <imp@bsdimp.com>
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Subject: Re: cvs commit: src/sys/ia64/ia64 machdep.c
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In message: <5539563a425020d35ef1878057f4f85d@qubesoft.com>
            Doug Rabson <dfr@qubesoft.com> writes:
: 
: On 4 Feb 2005, at 16:14, M. Warner Losh wrote:
: 
: > In message: <84e9ba659174ea3f7c7b2930c0ae3759@xcllnt.net>
: >             Marcel Moolenaar <marcel@xcllnt.net> writes:
: > : > I'm not sure if my approach is correct -- should different drivers 
: > for
: > : > the same hardware share the same devclass?
: > :
: > : A datapoint: sio(4) and uart(4) are different drivers for the same
: > : hardware.
: > : They don't share the devclass.
: >
: > Neither do they share the same name.
: 
: Just to make things clear, if two drivers use the same name, they will 
: always share the devclass automatically (whether or not they use the 
: same variable to reference the devclass) and will allocate 
: non-conflicting unit numbers.

Cool.  I'd thought I'd wound up with two instances of ed0 when I had
different devclasses in the if_ed_isa and if_ed_pci files once upon a
time...

Warner