From: David Miller <davem@davemloft.net>
To: paulus@samba.org
Cc: linuxppc-dev@ozlabs.org, dwmw2@infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.
Date: Tue, 03 Apr 2007 16:55:18 -0700 (PDT) [thread overview]
Message-ID: <20070403.165518.55726194.davem@davemloft.net> (raw)
In-Reply-To: <17938.57292.870224.132415@cargo.ozlabs.ibm.com>
From: Paul Mackerras <paulus@samba.org>
Date: Wed, 4 Apr 2007 09:14:20 +1000
> David Woodhouse writes:
>
> > There are proper device numbers registered for pmac_zilog now. Use them.
>
> Sigh. I guess this is inevitable, but IMNSHO this exposes a weakness
> in our serial subsystem.
>
> The problem is that this means that a user has to know "oh, the serial
> port on my computer is implemented with a Z85C30 chip, therefore it's
> /dev/ttyPZ0 not /dev/ttyS0, like it would be if the designers had used
> a 16C550".
...
> Why should a user know or care about that? It really should be "it's
> the built-in serial port on my computer therefore it's /dev/ttyS0".
I totally agree with Paul, the onboard serial device should get
ttyS0 regardless of what hardare is used to drive it.
We dish out the minors sequentially on sparc in order to handle
the case of multiple onboard serial controllers of different
types which can happen on sparc.
Generalizing this minor number allocation for ttyS? might be the
best way to handle this.
next prev parent reply other threads:[~2007-04-03 23:55 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-03 14:25 [PATCH] Stop pmac_zilog from abusing 8250's device numbers David Woodhouse
2007-04-03 20:37 ` Brad Boyer
2007-04-03 22:58 ` David Woodhouse
2007-04-03 23:14 ` Paul Mackerras
2007-04-03 23:28 ` David Woodhouse
2007-04-03 21:29 ` Brad Boyer
2007-04-03 23:57 ` David Woodhouse
[not found] ` <200704032210 02.GA13210@cynthia.pants.nu>
2007-04-03 22:10 ` Brad Boyer
2007-04-04 0:54 ` David Woodhouse
2007-04-03 23:09 ` Brad Boyer
2007-04-04 1:38 ` Alan Cox
2007-04-04 2:10 ` Valdis.Kletnieks
2007-04-04 1:57 ` David Lang
2007-04-04 8:51 ` Russell King
2007-04-04 9:48 ` Geert Uytterhoeven
2007-04-04 16:09 ` H. Peter Anvin
2007-04-04 16:22 ` Linas Vepstas
2007-04-04 16:34 ` David Woodhouse
2007-04-04 17:38 ` Linas Vepstas
2007-04-04 1:16 ` David Miller
2007-04-04 1:28 ` Alan Cox
2007-04-04 1:07 ` David Lang
2007-04-04 1:44 ` Alan Cox
2007-04-04 1:23 ` David Lang
2007-04-04 1:32 ` David Lang
2007-04-04 16:07 ` H. Peter Anvin
2007-04-04 17:50 ` Linas Vepstas
2007-04-04 1:50 ` David Miller
2007-04-04 11:14 ` Alan Cox
2007-04-04 12:20 ` Olivier Galibert
2007-04-04 1:48 ` David Miller
2007-04-04 3:07 ` Gerhard Mack
2007-04-11 16:30 ` Benny Amorsen
2007-04-12 15:34 ` Roland Dreier
2007-04-13 2:45 ` Gerhard Mack
2007-04-13 2:24 ` David Lang
2007-04-13 8:09 ` Geert Uytterhoeven
2007-04-04 0:02 ` David Miller
2007-04-04 0:12 ` David Woodhouse
2007-04-03 22:14 ` Brad Boyer
2007-04-04 1:13 ` Benjamin Herrenschmidt
2007-04-04 1:17 ` David Miller
2007-04-04 1:32 ` Benjamin Herrenschmidt
2007-04-04 0:01 ` [PATCH v2] " David Woodhouse
2007-04-04 1:25 ` [PATCH] " Alan Cox
2007-04-04 4:20 ` Paul Mackerras
2007-04-04 5:19 ` David Woodhouse
2007-04-04 5:50 ` David Miller
2007-04-04 7:04 ` Geert Uytterhoeven
2007-04-04 13:43 ` Maciej W. Rozycki
2007-04-04 7:52 ` Russell King
2007-04-04 8:41 ` David Miller
2007-04-04 5:53 ` Paul Mackerras
2007-04-04 6:03 ` David Woodhouse
2007-04-04 6:31 ` Paul Mackerras
2007-04-04 14:19 ` [PATCH v3] Stop pmac_zilog from abusing 8250's device numbers; optionally David Woodhouse
2007-04-04 23:48 ` Paul Mackerras
2007-04-05 12:45 ` David Woodhouse
2007-04-05 22:53 ` Paul Mackerras
2007-04-05 22:59 ` David Woodhouse
2007-04-05 14:31 ` Atsushi Nemoto
2007-04-05 14:47 ` David Woodhouse
2007-04-05 15:09 ` Atsushi Nemoto
2007-04-05 15:18 ` David Woodhouse
2007-04-05 15:49 ` Atsushi Nemoto
2007-04-05 15:56 ` Geert Uytterhoeven
2007-04-04 8:12 ` [PATCH] Stop pmac_zilog from abusing 8250's device numbers David Miller
2007-04-04 8:38 ` Russell King
2007-04-04 8:43 ` David Miller
2007-04-04 9:00 ` Russell King
2007-04-04 19:58 ` David Miller
2007-04-04 12:21 ` Theodore Tso
2007-04-04 16:10 ` Russell King
2007-04-04 16:16 ` H. Peter Anvin
2007-04-04 16:25 ` Alan Cox
2007-04-04 17:41 ` Theodore Tso
2007-04-04 18:15 ` Russell King
2007-04-04 19:50 ` David Woodhouse
2007-04-05 6:05 ` Paul Mackerras
2007-04-05 8:50 ` Russell King
2007-04-05 16:15 ` Olivier Galibert
2007-04-05 21:41 ` Pavel Machek
2007-04-03 23:56 ` David Miller
2007-04-04 1:13 ` Benjamin Herrenschmidt
2007-04-04 6:58 ` Paul Mackerras
2007-04-04 14:16 ` David Woodhouse
2007-04-03 23:55 ` David Miller [this message]
2007-04-04 1:19 ` Alan Cox
2007-04-04 1:21 ` David Miller
2007-04-04 1:36 ` Alan Cox
2007-04-04 1:47 ` David Miller
2007-04-04 7:47 ` Russell King
2007-04-04 9:55 ` Paul Mackerras
2007-04-04 16:06 ` Russell King
2007-04-04 6:58 ` Geert Uytterhoeven
2007-08-14 11:49 ` Olaf Hering
2007-08-14 11:53 ` David Woodhouse
2007-08-14 16:24 ` Olaf Hering
2007-04-04 7:55 ` Olaf Hering
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