linux-kernel - Re: [PATCH v3] libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9

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Date:   Sun, 28 Oct 2018 09:43:21 -0300
From:   Diego Viola <diego.viola@...il.com>
To:     hdegoede@...hat.com
Cc:     axboe@...nel.dk, tj@...nel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH v3] libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9

Hi Hans,

On Sun, Oct 28, 2018 at 7:48 AM Hans de Goede <hdegoede@...hat.com> wrote:
>
> Hi,
>
> On 28-10-18 05:13, Diego Viola wrote:
> > On Fri, Oct 26, 2018 at 5:36 PM Diego Viola <diego.viola@...il.com> wrote:
> >>
> >> On Fri, Oct 26, 2018 at 11:21 AM Jens Axboe <axboe@...nel.dk> wrote:
> >>>
> >>> On 10/26/18 7:45 AM, Diego Viola wrote:
> >>>> med_power_with_dipm causes my T450 to freeze with a SAMSUNG
> >>>> MZ7TD256HAFV-000L9 SSD (firmware DXT02L5Q).
> >>>>
> >>>> Switching the LPM to max_performance fixes this issue.
> >>>
> >>> Applied, thanks.
> >>>
> >>> --
> >>> Jens Axboe
> >>>
> >>
> >> Jens, Hans,
> >>
> >> Thank you.
> >>
> >> Diego
> >
> > Hi Hans and Jens,
> >
> > I just wanted to give you guys an update about this problem.
> >
> > I've managed to update my SSD firmware to the latest version[1].
> >
> > For running the update, I've had to install Windows 10, ran the
> > firmware update, remove Windows and reinstall Arch Linux.
> >
> > The latest version of the firmware is DXT04L5Q, and it looks like
> > there hasn't been a new update since 2015.
> >
> > I'll be running with med_power_with_dipm and hope this firmware update
> > fixes the problem, if it doesn't and I get another freeze, I'll send
> > another patch blacklisting the drive completely. Is that OK?
>
> Yes, if it still happens with the latest firmware then blacklisting
> it completely is the right thing to do.
>
> Unfortunately for reasons which I do not understand OEM SSDs often use
> different (customized?) firmware compared to the model on which they
> are based and often see less updates and seem to have more bugs :|
>
> Regards,
>
> Hans

I've just got another freeze with the latest firmware while I was
watching some YouTube videos. I think it's safe to assume this drive
is borked and won't get better, I'll send another patch.

Thanks,
Diego