linux-kernel - Re: [PATCH v2.6.38-rc7] Revert "libata: ahci_start

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Message-Id: <201105192332.16493.rjw@sisk.pl>
Date:	Thu, 19 May 2011 23:32:16 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jian Peng <jipeng2005@...il.com>
Cc:	Valdis.Kletnieks@...edu, Tejun Heo <tj@...nel.org>,
	Jeff Garzik <jgarzik@...ox.com>,
	Michael Leun <lkml20100708@...ton.leun.net>,
	linux-ide@...r.kernel.org,
	Linux PM mailing list <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2.6.38-rc7] Revert "libata: ahci_start_engine compliant to AHCI spec"

On Thursday, May 19, 2011, Jian Peng wrote:
> Hi, Rafael,
> 
> Yes. I tested without reverting the patch that caused failure on E6410 (with
> same AHCI controller), The system is Ubuntu 11.04 with default 2.6.39-rc6
> kernel (guess this should be same kernel as yours before reverting the
> patch).
> 
> My system worked well with AC power cable plugging in and out at boot time,
> at runtime, and during "dd if=/dev/sda5 of=/dev/null ..".

What kind of disk did you use?  Mine is an Intel SSD.

> The config file I mentioned is those under /etc/ or other directories that
> is used to control the power management.

They aren't relevant to this issue.

> Did you test my patch? What it the result?

No, I didn't.  Unfortunately, I won't be able to do any tests on the affected
machine in the near future (most probably for the next two weeks or so).

Thanks,
Rafael
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