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

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Date:	Tue, 03 Apr 2007 18:50:26 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	alan@...rguk.ukuu.org.uk
Cc:	david.lang@...italinsight.com, dwmw2@...radead.org,
	flar@...andria.com, paulus@...ba.org, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.

From: Alan Cox <alan@...rguk.ukuu.org.uk>
Date: Wed, 4 Apr 2007 02:44:00 +0100

> Well the better designed serial setups on Linux use numbering so that you
> can look on the multiplexor boxes and know straight away what the
> correlation between port number and name is. In the same was as "S0 is
> console 1" is nice to have its also nice to have "mux 1 port 4" easily
> calculable not think

If you want hierarchy, create it:

/sys/blah/serial/controllerX/portY

and keeping them all under the ttyS? major keeps the simple
cases working sanely too.
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