linux-kernel - Re: T60 not coming out of suspend to RAM

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Message-ID: <20060830150535.GA30172@mellanox.co.il>
Date:	Wed, 30 Aug 2006 18:05:36 +0300
From:	"Michael S. Tsirkin" <mst@...lanox.co.il>
To:	Pavel Machek <pavel@...e.cz>
Cc:	Andrew Morton <akpm@...l.org>, Jeff Garzik <jeff@...zik.org>,
	linux-pm@...l.org,
	Thomas Glanzmann <sithglan@...d.uni-erlangen.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org
Subject: Re: T60 not coming out of suspend to RAM

Quoting r. Pavel Machek <pavel@...e.cz>:
> Subject: Re: T60 not coming out of suspend to RAM
> 
> Hi!
> 
> > > > > > OK, it turns out the problem was with running SATA drive in AHCI mode.
> > > > > > 
> > > > > > After applying the following patch from Forrest Zhao
> > > > > > http://lkml.org/lkml/2006/7/20/56
> > > > > > both suspend to disk and suspend to ram work fine now.
> > > > > > This patch is going into 2.6.18, isn't it?
> > > > > 
> > > > > Not sure, check latest -rc5, and if it is not there, ask akpm...
> > > > > 
> > > > 
> > > > Andrew, this is going into 2.6.18, isn't it? I don't see it in -rc5.
> > > > 
> > > 
> > > It looks like Forrest's stuff is all queued up in the libata devel tree,
> > > although in a significantly different-looking form.
> > > 
> > > So no, right now it doesn't look good for 2.6.18.
> > > 
> > 
> > Ugh, more's the pity :( How about merging this one patch? T60 is only half
> > as useful without it (no disk after resume), and the rate of changes in
> > libata is high so just using a patch is gonnu be painful in the long run.
> 
> I guess you need to convince SATA maintainer that patch is safe before
> it can go in...

Right.

Jeff, could you please ack whether the following patch from Forrest Zhao
is safe for 2.6.18?
http://lkml.org/lkml/2006/7/20/56

Without it, no disk access is possible after resume from suspend-to-ram
on my T60.

-- 
MST
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