linux-kernel - Re: [PATCH v2] libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9

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Date:   Fri, 26 Oct 2018 11:33:10 -0300
From:   Diego Viola <diego.viola@...il.com>
To:     hdegoede@...hat.com
Cc:     axboe@...nel.dk, tj@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] libata: Apply NOLPM quirk for SAMSUNG MZ7TD256HAFV-000L9

On Fri, Oct 26, 2018 at 10:48 AM Diego Viola <diego.viola@...il.com> wrote:
>
> Hi Hans,
>
> On Fri, Oct 26, 2018 at 8:59 AM Hans de Goede <hdegoede@...hat.com> wrote:
> >
> > Hi,
> >
> > On 26-10-18 03:58, 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.
> > >
> > > Signed-off-by: Diego Viola <diego.viola@...il.com>
> >
> > Thank you for the patch, have you updated the firmware and
> > confirmed that this happens with the latest firmware version too ?
>
> No, I haven't tired the latest one yet.

s/tired/tried/

>
> The last time I saw, Samsung/Lenovo doesn't make it very easy for
> Linux users, and I don't have a Windows installation to perform the
> upgrade.
>
> >
> > If not please send a new version limiting the blacklist to your
> > firmware version.
>
> OK. Sent.
>
> >
> > Regards,
> >
> > Hans
> >
> >
> >
> >
> > > ---
> > >   drivers/ata/libata-core.c | 1 +
> > >   1 file changed, 1 insertion(+)
> > >
> > > diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> > > index a9dd4ea7467d..a7f5202a4815 100644
> > > --- a/drivers/ata/libata-core.c
> > > +++ b/drivers/ata/libata-core.c
> > > @@ -4553,6 +4553,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = {
> > >       /* These specific Samsung models/firmware-revs do not handle LPM well */
> > >       { "SAMSUNG MZMPC128HBFU-000MV", "CXM14M1Q", ATA_HORKAGE_NOLPM, },
> > >       { "SAMSUNG SSD PM830 mSATA *",  "CXM13D1Q", ATA_HORKAGE_NOLPM, },
> > > +     { "SAMSUNG MZ7TD256HAFV-000L9", NULL,       ATA_HORKAGE_NOLPM, },
> > >
> > >       /* devices that don't properly handle queued TRIM commands */
> > >       { "Micron_M500IT_*",            "MU01", ATA_HORKAGE_NO_NCQ_TRIM |
> > >
>
> Regards,
> Diego