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From: Hans Petter Selasky <hselasky@c2i.net>
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Date: Thu, 26 Jan 2012 17:25:02 +0100
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Cc: Stefan Bethke <stb@lassitu.de>, Marius Strobl <marius@alchemy.franken.de>
Subject: Re: Extending sys/dev/mii
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On Thursday 26 January 2012 17:25:09 Stefan Bethke wrote:
> Am 25.01.2012 um 23:17 schrieb Marius Strobl:
> > On Sat, Jan 21, 2012 at 12:08:34AM +0100, Stefan Bethke wrote:
> >> - miibus has a funny way of attaching to it's parent.  Making the parent
> >> a bus that automatically attaches matching children does not lead to
> >> good results.
> > 
> > That's the idea behind auto-probing, which all FreeBSD bus drivers
> > implement as far as the physical bus supports it.
> 
> Sorry, I should have been more specific.  I had problems when the device
> that miibus attaches to implements autoprobing and auto-attaches miibus
> directly, instead of through mii_attach().
> 

Hi,

While staying at the topic. All unneccesary panic() statements should be 
removed from mii() drivers. Sometimes, when you unplug a USB network device, a 
mii read can fail and that should not crash the system!

--HPS