linux-kernel - Re: Reworking suspend-resume sequence (was: Re: PCI PM: Restore standard config registers of all devices early)

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Message-ID: <20090204100704.GA19498@flint.arm.linux.org.uk>
Date:	Wed, 4 Feb 2009 10:07:05 +0000
From:	Russell King <rmk+lkml@....linux.org.uk>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Jesse Barnes <jesse.barnes@...el.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andreas Schwab <schwab@...e.de>, Len Brown <lenb@...nel.org>
Subject: Re: Reworking suspend-resume sequence (was: Re: PCI PM: Restore standard config registers of all devices early)

On Tue, Feb 03, 2009 at 10:12:04PM +0100, Thomas Gleixner wrote:
> On Tue, 3 Feb 2009, Ingo Molnar wrote:
> > So i'd still like your tentative Signed-off-by for your patch - it's i think 
> > not v2.6.29 material but if it stays problem free in testing we can try it 
> > in v2.6.30. If it causes problem it will be clearly bisectable and clearly 
> > revertable.
> > 
> > Maybe we could split it in two: and for MSI we could introduce a 'simpler 
> > and faster' edge flow as well - and keep the legacy handler untouched. That 
> > way it's low-risk in its entirety. (and avoids the MSI ->mask complication 
> > as well.)
> 
> Yes, seperating out the MSI handler into it's own flow control is the
> right way to go. We had trouble with real edge hardware and IIRC most
> of the problems originated from ARM. rmk ??

No idea, too long ago.

-- 
Russell King
 Linux kernel    2.6 ARM Linux   - http://www.arm.linux.org.uk/
 maintainer of:
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