From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Willy Tarreau <w@1wt.eu>, Matthew Garrett <mjg59@srcf.ucam.org>,
Daniel Barkalow <barkalow@iabervon.org>,
nigel@nigel.suspend2.net, Robert Hancock <hancockr@shaw.ca>,
linux-kernel <linux-kernel@vger.kernel.org>,
Jeff Garzik <jeff@garzik.org>, Pavel Machek <pavel@ucw.cz>,
pm list <linux-pm@lists.osdl.org>
Subject: Re: [PATCH] Re: NAK new drivers without proper power management?
Date: Sun, 11 Feb 2007 22:04:20 +0100 [thread overview]
Message-ID: <45CF84D4.3040305@s5r6.in-berlin.de> (raw)
In-Reply-To: <200702111536.20871.rjw@sisk.pl>
Rafael J. Wysocki wrote:
> - Problem what to do with drivers that work for some people and don't work
> for the others (ie. if we don't flag them as known good, we will break the
> setups in which they work)
And this issue is independent of whether a driver has .suspend and
.resume or not. For example, ohci1394 had them for ages but they didn't
work as expected before 2.6.20.
What's more, ohci1394's resume routine alone is insufficient; an
additional facility in ieee1394 was necessary and added for 2.6.21(-rc).
This shows that the original authors of ohci1394's .suspend and .resume
didn't test with actual external devices or gave up when they figured
that the problem reaches into upper subsystem layers. (We still haven't
tested interaction with most of the IEEE 1394 high level.)
--
Stefan Richter
-=====-=-=== --=- -=-==
http://arcgraph.de/sr/
WARNING: multiple messages have this Message-ID (diff)
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Robert Hancock <hancockr@shaw.ca>,
Matthew Garrett <mjg59@srcf.ucam.org>,
Pavel Machek <pavel@ucw.cz>, Jeff Garzik <jeff@garzik.org>,
Daniel Barkalow <barkalow@iabervon.org>,
pm list <linux-pm@lists.osdl.org>, Willy Tarreau <w@1wt.eu>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Re: NAK new drivers without proper power management?
Date: Sun, 11 Feb 2007 22:04:20 +0100 [thread overview]
Message-ID: <45CF84D4.3040305@s5r6.in-berlin.de> (raw)
In-Reply-To: <200702111536.20871.rjw@sisk.pl>
Rafael J. Wysocki wrote:
> - Problem what to do with drivers that work for some people and don't work
> for the others (ie. if we don't flag them as known good, we will break the
> setups in which they work)
And this issue is independent of whether a driver has .suspend and
.resume or not. For example, ohci1394 had them for ages but they didn't
work as expected before 2.6.20.
What's more, ohci1394's resume routine alone is insufficient; an
additional facility in ieee1394 was necessary and added for 2.6.21(-rc).
This shows that the original authors of ohci1394's .suspend and .resume
didn't test with actual external devices or gave up when they figured
that the problem reaches into upper subsystem layers. (We still haven't
tested interaction with most of the IEEE 1394 high level.)
--
Stefan Richter
-=====-=-=== --=- -=-==
http://arcgraph.de/sr/
next prev parent reply other threads:[~2007-02-11 21:04 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.xSKPgY66Q+DPCZ1pszFFfdrJ0To@ifi.uio.no>
[not found] ` <fa.FzHdYYYH5Ru57c8/yRxLylpH0Kk@ifi.uio.no>
[not found] ` <fa.DuG12yQo+RR4jIjJTnoOwtKM0Ao@ifi.uio.no>
[not found] ` <fa.Jy0FJQtASvVEpsy8Q96uoHtyEVA@ifi.uio.no>
2007-02-10 1:50 ` NAK new drivers without proper power management? Robert Hancock
2007-02-10 1:59 ` Lee Revell
2007-02-10 2:09 ` Nigel Cunningham
2007-02-10 2:22 ` Lee Revell
2007-02-10 3:21 ` Kevin Fox
2007-02-10 20:40 ` Adrian Bunk
2007-02-10 4:35 ` Joseph Fannin
2007-02-13 21:08 ` Pavel Machek
2007-02-10 12:47 ` Stefan Richter
2007-02-10 2:05 ` Nigel Cunningham
2007-02-10 3:27 ` Dmitry Torokhov
2007-02-10 4:18 ` Nigel Cunningham
2007-02-10 3:02 ` [PATCH] " Nigel Cunningham
2007-02-10 9:34 ` Rafael J. Wysocki
2007-02-10 9:34 ` Rafael J. Wysocki
2007-02-10 10:02 ` Nigel Cunningham
2007-02-10 10:30 ` Rafael J. Wysocki
2007-02-10 10:30 ` Rafael J. Wysocki
2007-02-10 17:52 ` Daniel Barkalow
2007-02-10 17:52 ` Daniel Barkalow
2007-02-10 19:50 ` Rafael J. Wysocki
2007-02-10 19:50 ` Rafael J. Wysocki
2007-02-11 6:54 ` Willy Tarreau
2007-02-11 6:54 ` Willy Tarreau
2007-02-11 12:13 ` Matthew Garrett
2007-02-11 13:09 ` Willy Tarreau
2007-02-11 13:09 ` Willy Tarreau
2007-02-11 13:19 ` Matthew Garrett
2007-02-11 13:37 ` Willy Tarreau
2007-02-11 13:37 ` Willy Tarreau
2007-02-11 13:50 ` Rafael J. Wysocki
2007-02-11 13:50 ` Rafael J. Wysocki
2007-02-11 13:57 ` Willy Tarreau
2007-02-11 13:57 ` Willy Tarreau
2007-02-11 14:36 ` Rafael J. Wysocki
2007-02-11 14:36 ` Rafael J. Wysocki
2007-02-11 15:19 ` Pekka Enberg
2007-02-11 15:19 ` Pekka Enberg
2007-02-11 18:31 ` Rafael J. Wysocki
2007-02-11 18:31 ` Rafael J. Wysocki
2007-02-11 17:27 ` Daniel Barkalow
2007-02-11 18:53 ` Rafael J. Wysocki
2007-02-11 18:53 ` Rafael J. Wysocki
2007-02-11 23:06 ` Nigel Cunningham
2007-02-11 23:06 ` Nigel Cunningham
2007-02-11 23:10 ` Rafael J. Wysocki
2007-02-11 23:10 ` Rafael J. Wysocki
2007-02-11 21:04 ` Stefan Richter [this message]
2007-02-11 21:04 ` Stefan Richter
2007-02-11 21:10 ` Pavel Machek
2007-02-11 17:36 ` Robert Hancock
2007-02-11 22:49 ` Nigel Cunningham
2007-02-11 19:37 ` Pavel Machek
2007-02-11 19:37 ` Pavel Machek
[not found] ` <fa.DhkemAgVI60diqZy0t9GzpwyLmk@ifi.uio.no>
[not found] ` <fa.E/NjHlgg0HqDg5CgZjnCHFi2AMM@ifi.uio.no>
[not found] ` <fa.kop49l/7yexJoUGrzk6vVeIP934@ifi.uio.no>
2007-02-10 23:20 ` Robert Hancock
2007-02-11 0:44 ` Rafael J. Wysocki
2007-02-11 17:01 ` Pavel Machek
2007-02-11 22:40 ` Nigel Cunningham
2007-02-11 23:29 ` Rafael J. Wysocki
2007-02-11 23:40 ` Nigel Cunningham
[not found] ` <fa.EgQN5JpU6xrZSLyOY0kWjJ26hUM@ifi.uio.no>
2007-02-11 18:31 ` Robert Hancock
2007-02-11 21:52 ` Willy Tarreau
2007-02-11 22:26 ` Nigel Cunningham
2007-02-11 22:46 ` Willy Tarreau
2007-02-11 23:18 ` Nigel Cunningham
2007-02-11 23:38 ` Willy Tarreau
2007-02-11 23:45 ` Nigel Cunningham
2007-02-12 0:26 ` Alan
2007-02-12 5:19 ` Willy Tarreau
2007-02-12 20:20 ` Rafael J. Wysocki
2007-02-12 22:36 ` Nigel Cunningham
2007-02-11 23:23 ` Alan
2007-02-11 23:38 ` Rafael J. Wysocki
2007-02-11 23:41 ` Rafael J. Wysocki
2007-02-11 23:47 ` Nigel Cunningham
2007-02-11 23:50 ` Rafael J. Wysocki
2007-02-11 23:55 ` Nigel Cunningham
2007-02-12 0:09 ` Rafael J. Wysocki
2007-02-12 0:15 ` Nigel Cunningham
2007-02-12 12:19 ` Pavel Machek
[not found] ` <fa.O1YH4k5KtBGCNs5i2yB17bPvPGw@ifi.uio.no>
[not found] ` <fa.RfzClbTP/7B79AoEbQLNj3ABfIk@ifi.uio.no>
[not found] ` <fa.AaJ/ugmiUmPO8uC+y1rS9JLuuMc@ifi.uio.no>
2007-02-12 0:59 ` Robert Hancock
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