From: linas@austin.ibm.com (Linas Vepstas)
To: David Woodhouse <dwmw2@infradead.org>
Cc: linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.
Date: Wed, 4 Apr 2007 12:38:56 -0500 [thread overview]
Message-ID: <20070404173856.GU4922@austin.ibm.com> (raw)
In-Reply-To: <1175704494.2774.33.camel@shinybook.infradead.org>
On Wed, Apr 04, 2007 at 12:34:53PM -0400, David Woodhouse wrote:
> On Wed, 2007-04-04 at 11:22 -0500, Linas Vepstas wrote:
> > The biggest problem would seem to be that the assignment would
> > depend on the detection order; there don't seem to be unique
> > id's that would help udev consistently assign device names in
> > consistent order.
>
> Of course there are. The different types of ports have different device
> numbers. As long as we don't do anything silly like putting all the
> serial drivers on the same major number, we can tell them apart
> relatively well.
Sure, but if two different pci serial cards are moved around
to different pci slots, they'll be detected in a different order.
Similarly if one has some usb-to-serial converter that might get
plugged in after boot, or maybe some serial port that shows up
only when a laptop is docked into a docking station.
--linas
WARNING: multiple messages have this Message-ID (diff)
From: linas@austin.ibm.com (Linas Vepstas)
To: David Woodhouse <dwmw2@infradead.org>
Cc: Brad Boyer <flar@allandria.com>,
linuxppc-dev@ozlabs.org, Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Stop pmac_zilog from abusing 8250's device numbers.
Date: Wed, 4 Apr 2007 12:38:56 -0500 [thread overview]
Message-ID: <20070404173856.GU4922@austin.ibm.com> (raw)
In-Reply-To: <1175704494.2774.33.camel@shinybook.infradead.org>
On Wed, Apr 04, 2007 at 12:34:53PM -0400, David Woodhouse wrote:
> On Wed, 2007-04-04 at 11:22 -0500, Linas Vepstas wrote:
> > The biggest problem would seem to be that the assignment would
> > depend on the detection order; there don't seem to be unique
> > id's that would help udev consistently assign device names in
> > consistent order.
>
> Of course there are. The different types of ports have different device
> numbers. As long as we don't do anything silly like putting all the
> serial drivers on the same major number, we can tell them apart
> relatively well.
Sure, but if two different pci serial cards are moved around
to different pci slots, they'll be detected in a different order.
Similarly if one has some usb-to-serial converter that might get
plugged in after boot, or maybe some serial port that shows up
only when a laptop is docked into a docking station.
--linas
next prev parent reply other threads:[~2007-04-04 17:39 UTC|newest]
Thread overview: 189+ 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 23:14 ` Paul Mackerras
2007-04-03 23:28 ` David Woodhouse
2007-04-03 23:28 ` David Woodhouse
2007-04-03 21:29 ` Brad Boyer
2007-04-03 21:29 ` Brad Boyer
2007-04-03 23:57 ` David Woodhouse
2007-04-03 23:57 ` David Woodhouse
[not found] ` <200704032210 02.GA13210@cynthia.pants.nu>
2007-04-03 22:10 ` Brad Boyer
2007-04-03 22:10 ` Brad Boyer
2007-04-04 0:54 ` David Woodhouse
2007-04-04 0:54 ` David Woodhouse
2007-04-03 23:09 ` Brad Boyer
2007-04-03 23:09 ` Brad Boyer
2007-04-04 1:38 ` Alan Cox
2007-04-04 1:38 ` Alan Cox
2007-04-04 2:05 ` Chris Adams
2007-04-04 2:10 ` Valdis.Kletnieks
2007-04-04 2:10 ` Valdis.Kletnieks
2007-04-04 1:57 ` David Lang
2007-04-04 1:57 ` David Lang
2007-04-04 8:51 ` Russell King
2007-04-04 8:51 ` Russell King
2007-04-04 9:48 ` Geert Uytterhoeven
2007-04-04 9:48 ` Geert Uytterhoeven
2007-04-04 16:09 ` H. Peter Anvin
2007-04-04 16:09 ` H. Peter Anvin
2007-04-04 16:22 ` Linas Vepstas
2007-04-04 16:22 ` Linas Vepstas
2007-04-04 16:34 ` David Woodhouse
2007-04-04 16:34 ` David Woodhouse
2007-04-04 17:38 ` Linas Vepstas [this message]
2007-04-04 17:38 ` Linas Vepstas
2007-04-04 1:16 ` David Miller
2007-04-04 1:16 ` David Miller
2007-04-04 1:28 ` Alan Cox
2007-04-04 1:28 ` Alan Cox
2007-04-04 1:07 ` David Lang
2007-04-04 1:07 ` David Lang
2007-04-04 1:44 ` Alan Cox
2007-04-04 1:44 ` Alan Cox
2007-04-04 1:23 ` David Lang
2007-04-04 1:23 ` David Lang
2007-04-04 1:32 ` David Lang
2007-04-04 1:32 ` David Lang
2007-04-04 16:07 ` H. Peter Anvin
2007-04-04 16:07 ` H. Peter Anvin
2007-04-04 17:50 ` Linas Vepstas
2007-04-04 17:50 ` Linas Vepstas
2007-04-04 1:50 ` David Miller
2007-04-04 1:50 ` David Miller
2007-04-04 11:14 ` Alan Cox
2007-04-04 11:14 ` Alan Cox
2007-04-04 12:20 ` Olivier Galibert
2007-04-04 12:20 ` Olivier Galibert
2007-04-04 1:48 ` David Miller
2007-04-04 1:48 ` David Miller
2007-04-04 3:07 ` Gerhard Mack
2007-04-04 3:07 ` Gerhard Mack
2007-04-11 16:30 ` Benny Amorsen
2007-04-11 16:30 ` Benny Amorsen
2007-04-12 15:34 ` Roland Dreier
2007-04-13 2:45 ` Gerhard Mack
2007-04-13 2:45 ` Gerhard Mack
2007-04-13 2:24 ` David Lang
2007-04-13 2:24 ` David Lang
2007-04-13 8:09 ` Geert Uytterhoeven
2007-04-13 8:09 ` Geert Uytterhoeven
2007-04-04 0:02 ` David Miller
2007-04-04 0:02 ` David Miller
2007-04-04 0:12 ` David Woodhouse
2007-04-04 0:12 ` David Woodhouse
2007-04-03 22:14 ` Brad Boyer
2007-04-03 22:14 ` Brad Boyer
2007-04-04 1:13 ` Benjamin Herrenschmidt
2007-04-04 1:13 ` Benjamin Herrenschmidt
2007-04-04 1:17 ` David Miller
2007-04-04 1:17 ` David Miller
2007-04-04 1:32 ` Benjamin Herrenschmidt
2007-04-04 1:32 ` Benjamin Herrenschmidt
2007-04-04 0:01 ` [PATCH v2] " David Woodhouse
2007-04-04 0:01 ` David Woodhouse
2007-04-04 1:25 ` [PATCH] " Alan Cox
2007-04-04 1:25 ` Alan Cox
2007-04-04 4:20 ` Paul Mackerras
2007-04-04 4:20 ` Paul Mackerras
2007-04-04 5:19 ` David Woodhouse
2007-04-04 5:19 ` David Woodhouse
2007-04-04 5:50 ` David Miller
2007-04-04 5:50 ` David Miller
2007-04-04 7:04 ` Geert Uytterhoeven
2007-04-04 7:04 ` Geert Uytterhoeven
2007-04-04 13:43 ` Maciej W. Rozycki
2007-04-04 13:43 ` Maciej W. Rozycki
2007-04-04 7:52 ` Russell King
2007-04-04 7:52 ` Russell King
2007-04-04 8:41 ` David Miller
2007-04-04 8:41 ` David Miller
2007-04-04 5:53 ` Paul Mackerras
2007-04-04 5:53 ` Paul Mackerras
2007-04-04 6:03 ` David Woodhouse
2007-04-04 6:03 ` David Woodhouse
2007-04-04 6:31 ` Paul Mackerras
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 14:19 ` David Woodhouse
2007-04-04 23:48 ` Paul Mackerras
2007-04-04 23:48 ` Paul Mackerras
2007-04-05 12:45 ` David Woodhouse
2007-04-05 12:45 ` David Woodhouse
2007-04-05 22:53 ` Paul Mackerras
2007-04-05 22:53 ` Paul Mackerras
2007-04-05 22:59 ` David Woodhouse
2007-04-05 22:59 ` David Woodhouse
2007-04-05 14:31 ` Atsushi Nemoto
2007-04-05 14:31 ` Atsushi Nemoto
2007-04-05 14:47 ` David Woodhouse
2007-04-05 14:47 ` David Woodhouse
2007-04-05 15:09 ` Atsushi Nemoto
2007-04-05 15:09 ` Atsushi Nemoto
2007-04-05 15:18 ` David Woodhouse
2007-04-05 15:18 ` David Woodhouse
2007-04-05 15:49 ` Atsushi Nemoto
2007-04-05 15:49 ` Atsushi Nemoto
2007-04-05 15:56 ` Geert Uytterhoeven
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 8:12 ` David Miller
2007-04-04 8:38 ` Russell King
2007-04-04 8:38 ` Russell King
2007-04-04 8:43 ` David Miller
2007-04-04 8:43 ` David Miller
2007-04-04 9:00 ` Russell King
2007-04-04 9:00 ` Russell King
2007-04-04 19:58 ` David Miller
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 16:25 ` Alan Cox
2007-04-04 17:41 ` Theodore Tso
2007-04-04 17:41 ` Theodore Tso
2007-04-04 18:15 ` Russell King
2007-04-04 19:50 ` David Woodhouse
2007-04-04 19:50 ` David Woodhouse
2007-04-05 6:05 ` Paul Mackerras
2007-04-05 6:05 ` Paul Mackerras
2007-04-05 8:50 ` Russell King
2007-04-05 8:50 ` Russell King
2007-04-05 16:15 ` Olivier Galibert
2007-04-05 21:41 ` Pavel Machek
2007-04-05 21:41 ` Pavel Machek
2007-04-03 23:56 ` David Miller
2007-04-03 23:56 ` David Miller
2007-04-04 1:13 ` Benjamin Herrenschmidt
2007-04-04 1:13 ` Benjamin Herrenschmidt
2007-04-04 6:58 ` Paul Mackerras
2007-04-04 6:58 ` Paul Mackerras
2007-04-04 14:16 ` David Woodhouse
2007-04-04 14:16 ` David Woodhouse
2007-04-03 23:55 ` David Miller
2007-04-03 23:55 ` David Miller
2007-04-04 1:19 ` Alan Cox
2007-04-04 1:19 ` Alan Cox
2007-04-04 1:21 ` David Miller
2007-04-04 1:21 ` David Miller
2007-04-04 1:36 ` Alan Cox
2007-04-04 1:36 ` Alan Cox
2007-04-04 1:47 ` David Miller
2007-04-04 1:47 ` David Miller
2007-04-04 7:47 ` Russell King
2007-04-04 7:47 ` Russell King
2007-04-04 9:55 ` Paul Mackerras
2007-04-04 9:55 ` Paul Mackerras
2007-04-04 16:06 ` Russell King
2007-04-04 16:06 ` Russell King
2007-04-04 6:58 ` Geert Uytterhoeven
2007-04-04 6:58 ` Geert Uytterhoeven
2007-08-14 11:49 ` Olaf Hering
2007-08-14 11:49 ` Olaf Hering
2007-08-14 11:53 ` David Woodhouse
2007-08-14 11:53 ` David Woodhouse
2007-08-14 16:24 ` Olaf Hering
2007-08-14 16:24 ` Olaf Hering
2007-04-04 7:55 ` Olaf Hering
[not found] <fa.RNOVtHsCnerNJiCxv9p57P7pZcA@ifi.uio.no>
[not found] ` <fa.dSkcKtgkzrihvFnFz6eHJ4FfEqo@ifi.uio.no>
[not found] ` <fa.QUe06itDHMey7lWZGdbZCBEo+KI@ifi.uio.no>
[not found] ` <fa.Hc/xBcsQlAMlaXgROFi/tmfDmUc@ifi.uio.no>
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