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From: Pavel Machek <pavel@ucw.cz>
To: David Brownell <david-b@pacbell.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Dominik Brugger <ml.dominik83@gmx.net>,
	kernel list <linux-kernel@vger.kernel.org>,
	linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] Re: OHCI problems with suspend/resume
Date: Thu, 31 Jul 2003 11:47:49 +0200	[thread overview]
Message-ID: <20030731094749.GB464@elf.ucw.cz> (raw)
In-Reply-To: <3F288CAB.6020401@pacbell.net>

Hi!

> Well, partially; but it's not used consistently.  Could you
> (or someone) explain what the plan is?  I see:
> 
>  - Three separate x86 PM "initiators":  APM, ACPI, swsusp.
>    (Plus ones for ARM and MIPS.)
> 
>  - Two driver registration infrastructures, the driver model
>    stuff and the older pm_*() stuff.
> 
> The pm_*() is how a handful of sound drivers and other random
> stuff register themselves -- and how PCI does it.
> 
> I'd sure have expected PCI to only use the driver model stuff,
> and I'll hope all those users will all be phased out by the
> time that 2.6 gets near the end of its test cycle.
> 
> 
> The "initiators" all talk to _both_ infrastructures, but they
> don't talk to the driver model stuff in the same way.  For
> example, on suspend:
> 
>  - ACPI issues a NOTIFY, which can veto the suspend;
>    then SAVE_STATE, ditto; finally POWER_DOWN.
> 
>  - APM uses the pm_*() calls for a vetoable check,
>    never issues SAVE_STATE, then goes POWER_DOWN.
> 
>  - While swsusp is more like ACPI except that it doesn't
>    support vetoing from either NOTIFY or SAVE_STATE.

Where does acpi call pm_*()? It seems like it does not and it seems
like a bug to me.
								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]

  parent reply	other threads:[~2003-07-31  9:48 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-23 22:08 OHCI problems with suspend/resume Pavel Machek
2003-07-24  1:19 ` [linux-usb-devel] " David Brownell
2003-07-24 10:24   ` Pavel Machek
2003-07-24 17:10     ` David Brownell
2003-07-24 22:10       ` Pavel Machek
2003-07-24 12:37 ` Dominik Brugger
2003-07-24 12:56   ` Dominik Brugger
2003-07-24 22:04   ` Pavel Machek
2003-07-24 22:46   ` Pavel Machek
2003-07-25  7:52     ` Dominik Brugger
2003-07-25 15:06       ` [linux-usb-devel] " Alan Stern
2003-07-25 17:20         ` Benjamin Herrenschmidt
2003-07-25 22:48           ` David Brownell
2003-07-26 16:02             ` Alan Stern
2003-07-26 21:01             ` Pavel Machek
2003-07-26 21:16               ` David Brownell
2003-07-27 14:57               ` Alan Stern
2003-07-31  3:27               ` David Brownell
2003-07-31  3:51                 ` David Brownell
2003-07-31  9:42                 ` Pavel Machek
2003-07-31 13:37                   ` David Brownell
2003-07-31 14:09                     ` Pavel Machek
2003-07-31 17:32                       ` David Brownell
2003-07-31 17:31                         ` Pavel Machek
2003-07-31 21:32                         ` Benjamin Herrenschmidt
2003-07-31 21:30                       ` Benjamin Herrenschmidt
2003-07-31 21:29                     ` Benjamin Herrenschmidt
2003-07-31  9:47                 ` Pavel Machek [this message]
2003-07-31 13:30                   ` David Brownell
2003-07-31 16:06                     ` Pavel Machek
2003-07-31  9:49                 ` Pavel Machek
2003-07-31 13:23                   ` David Brownell
2003-07-31 16:07                     ` Pavel Machek
2003-07-31 21:25                     ` Benjamin Herrenschmidt
2003-07-31 21:25                   ` Benjamin Herrenschmidt
2003-07-31 22:08                     ` Pavel Machek
2003-07-31 21:23                 ` Benjamin Herrenschmidt
2003-07-31 21:55                   ` David Brownell
2003-07-31 22:05                     ` Benjamin Herrenschmidt
2003-07-31 22:09                       ` Pavel Machek
2003-07-31 23:12                         ` Oliver Neukum
2003-08-01  9:33                           ` Pavel Machek
2003-07-31 22:03                   ` Pavel Machek
2003-08-01  0:27                     ` Benjamin Herrenschmidt
2003-08-04 19:25                       ` Pavel Machek
2003-08-01 18:20       ` Dominik Brugger
2003-07-29 13:16 ` [linux-usb-devel] " David Brownell
2003-07-31 14:18   ` Pavel Machek
2003-08-01 17:41     ` David Brownell
2003-08-07 22:35       ` Pavel Machek

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