Re: [PATCH v2.6.38-rc7] Revert "libata: ahci_start_engine compliant to AHCI spec"

From: Rafael J. Wysocki
Date: Thu May 19 2011 - 17:31:59 EST

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).

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