linux-kernel - Re: [PATCH 1/6] Hibernation: Introduce system_entering

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Date:	Mon, 19 Jan 2009 22:35:22 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Jeff Garzik <jeff@...zik.org>, Frans Pop <elendil@...net.nl>,
	tj@...nel.org, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, linux-ide@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/6] Hibernation: Introduce system_entering_hibernation

On Monday 19 January 2009, Frederic Weisbecker wrote:
> On Mon, Jan 19, 2009 at 08:54:54PM +0100, Rafael J. Wysocki wrote:
> > From: Rafael J. Wysocki <rjw@...k.pl>
> > 
> > Introduce boolean function system_entering_hibernation() returning
> > 'true' during the last phase of hibernation, in which devices are
> > being put into low power states and the sleep state (for example,
> > ACPI S4) is finally entered.
> > 
> > Some device drivers need such a function to check if the system is
> > in the final phase of hibernation.  In particular, some SATA drivers
> > are going to use it for blacklisting systems in which the disks
> > should not be spun down during the last phase of hibernation (the
> > BIOS will do that anyway).
> >
> 
> Hi Rafael,
> 
> Why not using the power event notifier?

I'm not sure what you mean exactly, care to elaborate?

Anyway, however, this is a pretty old patch series and I'm not very much
interested in reworking it once again.  If you think it can be made better,
please go on. :-)

Thanks,
Rafael
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