From: Pavel Machek <pavel@ucw.cz>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Linux-pm mailing list <linux-pm@lists.osdl.org>
Subject: Re: Problems with PM_FREEZE
Date: Tue, 27 Sep 2005 22:32:07 +0200 [thread overview]
Message-ID: <20050927203207.GE2040@elf.ucw.cz> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0509271621270.1014-100000@iolanthe.rowland.org>
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Hi!
> > We can add a hint to pm_message_t. But for "full resume", we really
> > don't know if devices are only FROZEN or if they need full reinit.
> >
> > So you may get info "only frozen" and "maybe frozen, maybe it was
> > powered down"; if you think that helps the drivers, just add a field
> > to pm_message_t (flags), and add this as a first flag.
>
> Okay. Can you tell me where is the code that resumes all the devices once
> the memory image is loaded?
kernel/power/swsusp.c swsusp_suspend() does device_power_up(). and
disk.c: pm_suspend_disk(). Use in_suspend() variable.
Ouch, but device_power_up and device_resume() do not take pm_message_t
parameter. They probably should. But the patch will be quite big.
Pavel
--
if you have sharp zaurus hardware you don't need... you know my address
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next prev parent reply other threads:[~2005-09-27 20:32 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-24 2:09 Problems with PM_FREEZE Alan Stern
2005-09-27 12:26 ` Pavel Machek
2005-09-27 19:02 ` Alan Stern
2005-09-27 19:58 ` Pavel Machek
2005-09-27 20:25 ` Alan Stern
2005-09-27 20:32 ` Pavel Machek [this message]
2005-09-27 21:30 ` Nigel Cunningham
2005-09-27 22:01 ` Pavel Machek
2005-09-27 23:19 ` Nigel Cunningham
2005-09-28 2:58 ` Alan Stern
2005-09-28 3:27 ` Nigel Cunningham
2005-09-28 15:46 ` David Brownell
2005-09-28 16:17 ` Alan Stern
2005-09-28 20:53 ` Pavel Machek
2005-09-28 21:15 ` Alan Stern
2005-09-28 21:18 ` Pavel Machek
2005-09-28 21:20 ` David Brownell
2005-09-28 21:22 ` Pavel Machek
2005-09-28 13:03 ` Pavel Machek
2005-09-29 15:45 ` Alan Stern
2005-09-29 17:12 ` David Brownell
2005-09-29 17:31 ` Pavel Machek
2005-09-29 18:22 ` David Brownell
2005-09-29 19:01 ` Rafael J. Wysocki
2005-09-29 17:49 ` Alan Stern
2005-09-28 13:04 ` Pavel Machek
2005-09-28 13:51 ` Rafael J. Wysocki
2005-09-28 18:54 ` Alan Stern
2005-09-28 19:09 ` Rafael J. Wysocki
2005-09-28 19:31 ` Alan Stern
2005-09-28 20:51 ` Pavel Machek
2005-09-28 21:13 ` Alan Stern
2005-09-28 21:19 ` Pavel Machek
2005-09-28 21:56 ` Rafael J. Wysocki
2005-09-28 22:01 ` Pavel Machek
2005-09-28 22:14 ` Rafael J. Wysocki
2005-09-28 20:51 ` Pavel Machek
2005-09-28 21:08 ` David Brownell
2005-09-28 21:13 ` Pavel Machek
2005-09-28 21:12 ` Alan Stern
2005-09-28 15:28 ` David Brownell
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