linux-kernel - Re: [PATCH] libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs

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Message-ID: <20180218132830.GG695913@devbig577.frc2.facebook.com>
Date:   Sun, 18 Feb 2018 05:28:30 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH] libata: Apply NOLPM quirk to Crucial MX100 512GB SSDs

On Fri, Feb 16, 2018 at 10:48:20AM +0100, Hans de Goede wrote:
> Various people have reported the Crucial MX100 512GB model not working
> with LPM set to min_power. I've now received a report that it also does
> not work with the new med_power_with_dipm level.
> 
> It does work with medium_power, but that has no measurable power-savings
> and given the amount of people being bitten by the other levels not
> working, this commit just disables LPM altogether.
> 
> Note all reporters of this have either the 512GB model (max capacity), or
> are not specifying their SSD's size. So for now this quirk assumes this is
> a problem with the 512GB model only.
> 
> Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=89261
> Buglink: https://github.com/linrunner/TLP/issues/84
> Cc: stable@...r.kernel.org
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>

Applied to libata/for-4.16-fixes.

Thanks.

-- 
tejun