linux-kernel - Re: [RFC PATCH 2/2] mtd: nand: use nand_check_erased_ecc

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Message-ID: <20150806111901.3d2d5494@bbrezillon>
Date:	Thu, 6 Aug 2015 11:19:01 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Richard Weinberger <richard@....at>
Cc:	Andrea Scian <rnd4@...e-tech.it>, linux-mtd@...ts.infradead.org,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-kernel@...r.kernel.org, Han Xu <b45815@...escale.com>,
	Artem Bityutskiy <dedekind1@...il.com>
Subject: Re: [RFC PATCH 2/2] mtd: nand: use nand_check_erased_ecc_chunk in
 default ECC read functions

Hi Richard,

On Tue, 4 Aug 2015 09:21:27 +0200
Richard Weinberger <richard@....at> wrote:

> Andrea,
> 
> Am 04.08.2015 um 09:02 schrieb Andrea Scian:
> >> I'm not sure whether introducing a read-before-write check is the best solution.
> >> At least we need hard numbers for slow/old SLC NANDs too.
> > 
> > We can enable the feature only for MLC, AFAIK it has not been required for old SLC ;-)
> 
> I think this needs more discussion.
> 
> Boris, Brian, will you be at Embedded Linux Conference Europe in Dublin?
> Maybe we can discuss these issues (data retention, ff-checks, etc...) in person and figure out where to address them.
> I really want to avoid ad-hoc solutions. :)

I'll be at ELCE and I'd be happy to discuss all these NAND/MTD/UBI
related issues with you, though I think we should keep discussing
those problems on the ML too.

Best Regards,

Boris

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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