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

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Message-ID: <201008170951.26073.stephan.diestelhorst@amd.com>
Date:	Tue, 17 Aug 2010 09:51:25 +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

Hi Tejun,

On Thursday 05 August 2010 18:08:02 Tejun Heo wrote:
> Can you please try the following patch and see whether the problem
> goes away?

I've finally managed to get this to compile and test. (Hit a bug with
Debian's make-kpkg and other nuisances...)

The problem is still there. On some resumes I get the dreadful dead
disk again:

end_request: I/O error , dev sda sector ...
sd 0:0:0:0: [sda] Unhandled error code
sd 0:0:0:0: [sda] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
sd 0:0:0:0: [sda] CDB: Read(10): 28 00 0e a4 77 a8 0 00 08 00
(many of those)

Can't access /var/log/messages right now, due to broken I/O. Will try
to trigger it again and check for the qc timeout messages..

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
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Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632

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