linux-kernel - Re: [PATCH v2 2/2] libata: Ignore spurious PHY event on LPM policy change

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Message-ID: <20150425205359.GB1499@htj.duckdns.org>
Date:	Sat, 25 Apr 2015 16:53:59 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Gabriele Mazzotta <gabriele.mzt@...il.com>
Cc:	stripathi@....com, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org
Subject: Re: [PATCH v2 2/2] libata: Ignore spurious PHY event on LPM policy
 change

On Sat, Apr 25, 2015 at 07:52:37PM +0200, Gabriele Mazzotta wrote:
> When the LPM policy is set to ATA_LPM_MAX_POWER, the device might
> generate a spurious PHY event that cuases errors on the link.
> Ignore this event if it occured within 10s after the policy change.
> 
> The timeout was chosen observing that on a Dell XPS13 9333 these
> spurious events can occur up to roughly 6s after the policy change.
> 
> Link: http://lkml.kernel.org/g/3352987.ugV1Ipy7Z5@xps13
> Signed-off-by: Gabriele Mazzotta <gabriele.mzt@...il.com>

Applied 1-2 to libata/for-4.1-fixes w/ stable cc'd.

Thanks a lot.

-- 
tejun
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