linux-kernel - Re: [PATCH] SATA / AHCI: Do not play with the link PM during suspend to RAM

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Message-ID: <201008171251.29441.stephan.diestelhorst@amd.com>
Date:	Tue, 17 Aug 2010 12:51:28 +0200
From:	Stephan Diestelhorst <stephan.diestelhorst@....com>
To:	Tejun Heo <htejun@...il.com>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	"linux-pm@...ts.osdl.org" <linux-pm@...ts.osdl.org>,
	Stephan Diestelhorst <stephan.diestelhorst@...il.com>
Subject: Re: [PATCH] SATA / AHCI: Do not play with the link PM during suspend to RAM

On Tuesday 17 August 2010, 12:29:28 Stephan Diestelhorst wrote:
> Hi,
> 
> On Tuesday 17 August 2010 12:15:33 Tejun Heo wrote:
> > On 08/17/2010 11:32 AM, Stephan Diestelhorst wrote:
> > > Indeed. Like I said, I have similar issues on a another Samsung HDD in
> > > an AMD system. I have not yet got around to try the fix there, but I
> > > suspect it is the same thing.
> > > 
> > > I have attached the full /var/log/messages and /var/log/kern.log with
> > > multiple suspend-to-ram runs and the last one failing.
> > 
> > Hmm... are you sure the patch is applied?  There's no debug message
> > outputs in the log which the patch added.
> 
> ...

I *think* I have applied the patch correctly. Please find a copy of
"git show" in the build directory attached. This should be the right
thing, shouldn't it?

Maybe I forgot to speify a particular debug option / verbosity?

I've also confirmed that the "XXX ahci_set_ipm" is present in
libahci.ko. So either I've screwed up badly when compiling the initrd,
the code is not executed or the printout does not make it into any
logfile anymore.

Stephan
-- 
Stephan Diestelhorst, AMD Operating System Research Center
stephan.diestelhorst@....com, Tel. +49 (0)351 448 356 719

Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632

Download attachment "actually_applied.git_show.bz2" of type "application/x-bzip" (11245 bytes)