linux-kernel - Re: [linux-pm] [PATCH 1/3] PCI: Rework default handling of suspend and resume

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Message-ID: <s5hd4g4xqso.wl%tiwai@suse.de>
Date:	Sun, 07 Dec 2008 10:44:55 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg KH <greg@...ah.com>, LKML <linux-kernel@...r.kernel.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [linux-pm] [PATCH 1/3] PCI: Rework default handling of suspend and resume

At Sat, 6 Dec 2008 22:00:59 -0800 (PST),
Linus Torvalds wrote:
> 
> 
> 
> On Sat, 6 Dec 2008, Arjan van de Ven wrote:
> > 
> > the problem is that the system bios can have reassigned interrupts
> > after resume, and afaik we need to re-evaluate the ACPI methods to
> > get the new mapping.
> > So we need to unregister + re-register to make that happen
> 
> Can you give actual examples of real life situations?

There were such cases on intel8x0 and maestro3 on-board sound devices,
but all they were about hibernate, IIRC.  Just though a quick git 
log search, I found the following:
	http://bugzilla.kernel.org/show_bug.cgi?id=4416


Takashi
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