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

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Message-ID: <4C6AA50F.3090801@gmail.com>
Date:	Tue, 17 Aug 2010 17:04:47 +0200
From:	Tejun Heo <htejun@...il.com>
To:	Stephan Diestelhorst <stephan.diestelhorst@....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

Hello,

On 08/17/2010 12:51 PM, Stephan Diestelhorst wrote:
> 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?

Yeah, looks right to me but if you have enabled IPM, there gotta be
at least some XXX messages in the log.  Weird.

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

Hmmm... all messages are at KERN_INFO level and they don't have any
switch.

> 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.

Yeah, that's weird.  You're enabling IPM, right?

Thanks.

-- 
tejun
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