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To: "M. Warner Losh" <imp@bsdimp.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Sat, 22 Dec 2007 23:45:26 MST."
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Date: Sun, 23 Dec 2007 07:44:46 +0000
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Cc: freebsd-arch@freebsd.org, alfred@freebsd.org, hselasky@c2i.net
Subject: Re: More leaves on the device tree ? 
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In message <20071222.234526.246317277.imp@bsdimp.com>, "M. Warner Losh" writes:
>In message: <200712202005.33263.hselasky@c2i.net>
>            Hans Petter Selasky <hselasky@c2i.net> writes:
>: "make_dev" takes an additional "device_t parent_device" argument and creates a 
>: child device with some magic flags set.
>
>What do you do for all the devices in /dev/ for which there is no
>device_t parent?

I second Warners comments here.

device_t is a handle for a hardware, dev_t is for a device in /dev,
they are very different thing and have no reasonable mapping between
them ([0..N]:[0..M])

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.