linux-kernel - Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.

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Date:	Wed, 4 Apr 2007 16:58:09 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	David Woodhouse <dwmw2@...radead.org>
Cc:	linuxppc-dev@...abs.org, benh@...nel.crashing.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.

David Woodhouse writes:

> A GUI PPP dialer should be
> listing the available serial ports in the system whatever their names
> are.

How do you propose they do that?  Neither kppp nor gnome-ppp seem to
be able to do that currently.  Gnome-ppp offers just /dev/modem and
/dev/ttyS[0123].  Kppp offers those plus a whole pile of others, but
neither found the /dev/ttyPZ[01] that I get with your patch applied.
Gnome-ppp at least let me type in /dev/ttyPZ0, but kppp didn't seem to
have that facility.

> And nobody _forces_ you to use the name ttyPZ0. If you really want, you
> can call it ttyS0.... just mknod /dev/ttyS0 204 192

Sure I can do that, but that's beyond a non-technical user, who is
precisely the person who won't know (and shouldn't have to know) that
their computer has an 85C30 chip rather than a 16C550, or even what
those numbers refer to.

Paul.
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