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Message-ID: <1520436263.2674.35.camel@gmail.com>
Subject: Re: [PATCH] ubi: Reject MLC NAND
From:   Artem Bityutskiy <dedekind1@gmail.com>
Reply-To: dedekind1@gmail.com
To:     Richard Weinberger <richard@nod.at>, Pavel Machek <pavel@ucw.cz>
Cc:     linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
        cyrille.pitchen@wedev4u.fr, marek.vasut@gmail.com,
        boris.brezillon@free-electrons.com, computersforpeace@gmail.com,
        dwmw2@infradead.org, tharvey@gateworks.com, stable@vger.kernel.org
Date:   Wed, 07 Mar 2018 17:24:23 +0200
In-Reply-To: <6772577.AmT7QaWTNU@blindfold>
References: <20180303104554.5958-1-richard@nod.at>
         <20180306231805.GA28183@amd> <6772577.AmT7QaWTNU@blindfold>
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On Wed, 2018-03-07 at 09:01 +0100, Richard Weinberger wrote:
> Pavel,
> 
> Am Mittwoch, 7. März 2018, 00:18:05 CET schrieb Pavel Machek:
> > On Sat 2018-03-03 11:45:54, Richard Weinberger wrote:
> > > While UBI and UBIFS seem to work at first sight with MLC NAND,
> > > you will
> > > most likely lose all your data upon a power-cut or due to
> > > read/write
> > > disturb.
> > > In order to protect users from bad surprises, refuse to attach to
> > > MLC
> > > NAND.
> > > 
> > > Cc: stable@vger.kernel.org
> > 
> > That sounds like _really_ bad idea for stable. All it does is it
> > removes support for hardware that somehow works.
> 
> MLC is not supported and does not work. Full stop.

Ack.