linux-kernel - Re: [PATCH] mtd: nand: Fix regression in BBM detection

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Date:	Wed, 18 Aug 2010 17:04:35 -0700
From:	"Brian Norris" <norris@...adcom.com>
To:	"Abdoulaye Walsimou GAYE" <awg@...toolkit.org>
cc:	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"Artem Bityutskiy" <dedekind1@...il.com>,
	"Linux Kernel" <linux-kernel@...r.kernel.org>,
	"mike@...loops.com" <mike@...loops.com>,
	"David Woodhouse" <dwmw2@...radead.org>
Subject: Re: [PATCH] mtd: nand: Fix regression in BBM detection

On 08/18/2010 12:30 PM, Abdoulaye Walsimou GAYE wrote:
> Brian,
> Sorry for the long delay!
> I tested the above patch unfortunately it does not help in my case!

Understood. That makes sense. In fact, your problem is most likely *not* 
related to this commit. As I mentioned before, please try narrowing down 
what specifically caused this; if I read correctly, you jumped from 
2.6.33 to 2.6.36-rc1. There have been several important changes between 
those releases. Notably, this commit may be giving Samsung chips problems:
426c457a3216fac74e

This thread is covering a few problems with Samsung:
http://lists.infradead.org/pipermail/linux-mtd/2010-August/031590.html

> And when I go further and put a JFFS2 in that partition and boot the
> board I have
<snip>
> Despite these errors I can actually use the board (no kernel panic)!
> The part is Samsung K9F1208U0C - PCB0

Unless you really know what you're doing, I wouldn't be writing/erasing 
the flash if it's not detecting bad blocks properly.

Let me know if you have trouble with narrowing down to the problem commit.

Brian

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