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From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [0/6] Patch serie UBI min I/O size fixes
Date: Thu, 27 Jan 2011 17:52:19 +0100	[thread overview]
Message-ID: <m2ei7yxpa4.fsf@ohwell.denx.de> (raw)
In-Reply-To: <4D416165.3030200@keymile.com> (Holger Brunck's message of "Thu,  27 Jan 2011 13:13:25 +0100")

Hi Holger,

> Hi,
>
> Brunck, Holger wrote:
>> This patch serie fixes a problem in the UBI layer. The min I/O size has
>> currently a fixed value of 1 for NOR flashes. But for NOR flashes the min I/O
>> size has to be equal to the size of the writebuffer of the flash. Therefore the
>> mtd layer was enhanced with the writebuffer which was later on used in the ubi
>> layer to set the min I/O size.
>> 
>> This patches fixes problems with flash types with a writebuffersize > 128 Byte
>> and is mainly taken from the similar linux patches. See MTD mailing list posts:
>> http://lists.infradead.org/pipermail/linux-mtd/2010-December/033460.html
>> 
>> Without the u-boot patches attaching to a ubi device with a min I/O buffer
>> larger than 128 would fail.
>> 
>
> with the same changes in the linux kernel we see incompatibilities for the
> UBIFS. Due to this fact the patches should be restrained until this problem is
> solved.
>
> See:
> http://lists.infradead.org/pipermail/linux-mtd/2011-January/033794.html

Ah, I see.  Thanks for the info.

In defense of my overlapping mail, I can only state that the reference
header in this mail of yours does not point to the earlier thread (check
[1]) and thus I saw it only much later:

> References: <4D41331C.7000302@keymile.com>
> In-Reply-To: <4D41331C.7000302@keymile.com>

But anyway, sorry for the noise.

Cheers
  Detlev

[1] http://mid.gmane.org/4D41331C.7000302 at keymile.com

-- 
Man against god... God against Man... Man against nature... Nature against
man...   God against nature...   Nature against god...  a very, very funny
religion.             -- Zen Master D.T. Suzuki commenting on Christianity
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

  reply	other threads:[~2011-01-27 16:52 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <4D41331C.7000302@keymile.com>
2011-01-27 12:13 ` [U-Boot] [0/6] Patch serie UBI min I/O size fixes Holger Brunck
2011-01-27 16:52   ` Detlev Zundel [this message]
2011-01-20 16:16 Holger Brunck
2011-04-04 10:51 ` Stefan Roese
2011-04-04 11:15   ` Holger Brunck

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