From: Pavel Machek <pavel@ucw.cz>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
Arjan van de Ven <arjan@infradead.org>,
nigel@nigel.suspend2.net, LKML <linux-kernel@vger.kernel.org>
Subject: Re: NAK new drivers without proper power management?
Date: Mon, 12 Feb 2007 16:04:10 +0100 [thread overview]
Message-ID: <20070212150410.GA17400@elf.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.62.0702120948230.10436@chinchilla.sonytel.be>
Hi!
> > "If the device requires that, implement .suspend and .resume or at least
> ^^^^^^^^
> > define .suspend that will always return -ENOSYS (then people will know they
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > have to unload the driver before the suspend). Similarly, if you aren't sure
> > whether or not the device requires .suspend and .resume, define .suspend that
> ^^^^^^^^^^^^^^^^^^^^
> > will always return -ENOSYS."
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Can't the upper layer just assume -ENOSYS if .resume/.suspend is NULL?
> It's nicer if you don't have to implement dummy functions at all.
Unfortunately, drivers currently assume "NULL == nothing is needed",
so we'd have t do big search & replace...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2007-02-12 15:04 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-09 21:57 NAK new drivers without proper power management? Nigel Cunningham
2007-02-09 22:17 ` Arjan van de Ven
2007-02-09 22:26 ` Nigel Cunningham
2007-02-09 22:44 ` Rafael J. Wysocki
2007-02-09 22:44 ` Rafael J. Wysocki
2007-02-09 22:51 ` Nigel Cunningham
2007-02-09 22:51 ` Nigel Cunningham
2007-02-09 23:12 ` Rafael J. Wysocki
2007-02-09 23:12 ` Rafael J. Wysocki
2007-02-09 23:28 ` Nigel Cunningham
2007-02-09 23:28 ` Nigel Cunningham
2007-02-10 0:12 ` Rafael J. Wysocki
2007-02-10 0:12 ` Rafael J. Wysocki
2007-02-10 0:25 ` Jeff Garzik
2007-02-10 6:43 ` Willy Tarreau
2007-02-10 23:52 ` Tilman Schmidt
2007-02-10 7:15 ` Arjan van de Ven
2007-02-10 19:38 ` Pavel Machek
2007-02-10 22:20 ` Rafael J. Wysocki
2007-02-10 22:37 ` Nigel Cunningham
2007-02-10 23:45 ` Tilman Schmidt
2007-02-11 0:27 ` Rafael J. Wysocki
2007-02-11 22:41 ` Nigel Cunningham
2007-02-13 15:55 ` Mark Lord
2007-02-13 16:06 ` Christoph Hellwig
2007-02-11 22:37 ` Nigel Cunningham
2007-02-12 0:10 ` Tilman Schmidt
2007-02-12 0:20 ` Rafael J. Wysocki
2007-02-12 4:08 ` Nigel Cunningham
2007-02-12 20:06 ` Rafael J. Wysocki
2007-02-12 22:38 ` Nigel Cunningham
2007-03-03 22:48 ` Suspend/resume semantics for ISDN drivers (was: NAK new drivers without proper power management?) Tilman Schmidt
2007-03-04 19:04 ` Rafael J. Wysocki
2007-03-08 23:35 ` Pavel Machek
2007-02-11 6:46 ` NAK new drivers without proper power management? Willy Tarreau
2007-02-11 13:04 ` Rafael J. Wysocki
2007-02-11 22:47 ` Nigel Cunningham
2007-02-11 22:57 ` Manu Abraham
2007-02-11 23:20 ` Nigel Cunningham
2007-02-11 23:25 ` Manu Abraham
2007-02-11 23:29 ` Pavel Machek
2007-02-11 23:33 ` Nigel Cunningham
2007-02-12 16:52 ` Pavel Machek
2007-02-12 20:31 ` Rafael J. Wysocki
2007-02-12 20:58 ` Pavel Machek
2007-02-12 21:01 ` Rafael J. Wysocki
2007-02-12 21:24 ` Nigel Cunningham
2007-02-12 21:43 ` Rafael J. Wysocki
2007-02-13 9:42 ` Tilman Schmidt
2007-02-13 19:24 ` Rafael J. Wysocki
2007-02-14 23:45 ` Stefan Richter
2007-02-12 9:45 ` Arjan van de Ven
2007-02-12 12:59 ` Gerhard Mack
2007-02-12 20:20 ` Willy Tarreau
2007-02-13 15:23 ` Brad Campbell
2007-02-12 20:46 ` Rafael J. Wysocki
2007-02-12 13:51 ` Tino Keitel
2007-02-11 19:42 ` Pavel Machek
2007-02-11 21:02 ` Alan
2007-02-11 23:04 ` Rafael J. Wysocki
2007-02-12 0:28 ` Alan
2007-02-12 0:24 ` Rafael J. Wysocki
2007-02-11 23:10 ` Nigel Cunningham
2007-02-11 23:16 ` Rafael J. Wysocki
2007-02-11 23:22 ` Nigel Cunningham
2007-02-11 23:23 ` Pavel Machek
2007-02-11 23:21 ` Pavel Machek
2007-02-11 23:29 ` Nigel Cunningham
2007-02-11 22:21 ` Tilman Schmidt
2007-02-12 8:49 ` Geert Uytterhoeven
2007-02-12 15:04 ` Pavel Machek [this message]
2007-02-12 15:57 ` Geert Uytterhoeven
2007-02-12 16:55 ` Pavel Machek
2007-02-12 20:38 ` Nigel Cunningham
2007-02-13 10:02 ` Tilman Schmidt
2007-02-10 3:42 ` Matthew Garrett
2007-02-10 4:42 ` Nigel Cunningham
[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 ` 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
[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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