From: David Brownell <david-b@pacbell.net>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
Paul Mackerras <paulus@samba.org>,
Linus Torvalds <torvalds@osdl.org>, Andrew Morton <akpm@osdl.org>,
Pavel Machek <pavel@ucw.cz>
Subject: Re: Totally broken PCI PM calls
Date: Mon, 11 Oct 2004 20:00:53 -0700 [thread overview]
Message-ID: <200410112000.53814.david-b@pacbell.net> (raw)
In-Reply-To: <1097536131.13795.40.camel@gaston>
On Monday 11 October 2004 4:08 pm, Benjamin Herrenschmidt wrote:
> On Tue, 2004-10-12 at 08:58, Dmitry Torokhov wrote:
>
> > Yes, I think that devices that failed to resume (and all their children)
> > have to be moved by the core resume function into a separate list and
> > then destroyed (again by the driver core).
OHCI has to do this when the controller loses power during suspend;
which includes many suspend-to-disk cases. It marks the devices dead,
kills the I/O queues, and then makes khubd do all the work.
> > For that we might need to add
> > bus_type->remove_device() handler as it seems that all buses do alot
> > of work outside of driver->remove handlers. The remove_device should
> > accept additional argument - something like dead_device that would
> > suggest that driver should not be alarmed by any errors during unbind/
> > removal process as the device (or rather usually its parent) is simply
> > not there anynore.
>
> They already do... think USB...
USB decided against the extra argument; drivers don't much care
at that point. And anyway, they can tell the device is gone by looking
at status codes returned by URB completion or submission.
- Dave
> Ben.
>
>
>
next prev parent reply other threads:[~2004-10-12 3:03 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-11 0:45 Totally broken PCI PM calls Benjamin Herrenschmidt
2004-10-11 2:41 ` Linus Torvalds
2004-10-11 3:42 ` Paul Mackerras
2004-10-11 4:04 ` Linus Torvalds
2004-10-11 4:24 ` Paul Mackerras
2004-10-11 9:57 ` Pavel Machek
2004-10-11 14:42 ` Linus Torvalds
2004-10-11 14:56 ` suspend-to-RAM [was Re: Totally broken PCI PM calls] Pavel Machek
2004-10-11 15:30 ` Linus Torvalds
2004-10-11 17:39 ` Olivier Galibert
2004-10-11 18:21 ` Pavel Machek
2004-10-11 15:53 ` Brice Goglin
2004-10-11 16:17 ` Pavel Machek
2004-10-11 17:09 ` Brice Goglin
2004-10-11 18:23 ` Pavel Machek
2004-10-11 18:40 ` Brice Goglin
2004-10-11 16:47 ` Totally broken PCI PM calls David Brownell
2004-10-11 22:28 ` Benjamin Herrenschmidt
2004-10-11 22:58 ` Dmitry Torokhov
2004-10-11 23:08 ` Benjamin Herrenschmidt
2004-10-12 3:00 ` David Brownell [this message]
2004-10-12 4:09 ` Dmitry Torokhov
2004-10-12 16:56 ` David Brownell
2004-10-12 9:27 ` Russell King
2004-10-12 11:24 ` Benjamin Herrenschmidt
2004-10-11 4:25 ` Linus Torvalds
2004-10-11 10:18 ` Pavel Machek
2004-10-11 10:54 ` Benjamin Herrenschmidt
2004-10-11 16:01 ` Linus Torvalds
2004-10-15 13:59 ` Pavel Machek
2004-10-15 15:56 ` Linus Torvalds
2004-10-24 20:58 ` Pavel Machek
2004-10-24 21:18 ` Linus Torvalds
2004-10-11 16:36 ` David Brownell
2004-10-11 21:17 ` Nigel Cunningham
2004-10-11 21:37 ` David Brownell
2004-10-11 22:12 ` Stefan Seyfried
2004-10-12 2:59 ` David Brownell
2004-10-12 8:54 ` Pavel Machek
2004-10-12 10:32 ` Stefan Seyfried
2004-10-12 18:28 ` David Brownell
2004-10-12 20:28 ` Stefan Seyfried
2004-10-13 13:34 ` David Brownell
2004-10-12 1:24 ` Nigel Cunningham
2004-10-12 8:53 ` Pavel Machek
2004-10-12 18:52 ` David Brownell
2004-10-12 19:50 ` Pavel Machek
2004-10-12 22:13 ` Benjamin Herrenschmidt
2004-10-12 22:35 ` David Brownell
2004-10-11 22:26 ` Benjamin Herrenschmidt
2004-10-11 3:45 ` Benjamin Herrenschmidt
2004-10-11 4:08 ` Linus Torvalds
2004-10-11 4:23 ` Benjamin Herrenschmidt
2004-10-11 4:32 ` Linus Torvalds
2004-10-11 4:55 ` Benjamin Herrenschmidt
2004-10-11 16:15 ` David Brownell
2004-10-11 22:22 ` Benjamin Herrenschmidt
2004-10-12 2:46 ` David Brownell
2004-10-12 4:02 ` Benjamin Herrenschmidt
2004-10-12 10:49 ` Nigel Cunningham
2004-10-12 11:27 ` Benjamin Herrenschmidt
2004-10-12 11:38 ` Nigel Cunningham
2004-10-12 11:51 ` Pavel Machek
2004-10-11 10:08 ` Pavel Machek
2004-10-11 9:51 ` Pavel Machek
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