From: tglx@linutronix.de (Thomas Gleixner)
To: "J.D. Bakker" <bakker@thorgal.et.tudelft.nl>,
linux-mtd@lists.infradead.org
Subject: Re: NAND bad blocks
Date: Thu, 15 Apr 2004 20:52:32 +0200 [thread overview]
Message-ID: <200404152052.32923.tglx@linutronix.de> (raw)
In-Reply-To: <a06002006bca469e103ce@[130.161.115.44]>
On Thursday 15 April 2004 18:39, J.D. Bakker wrote:
> Hi all,
>
> There's a slight discrepancy between what mtd and mkyaffs consider a bad
> block.
> ...which would indicate that even one bit set to zero would mark the
> block bad. However, mkyaffs.c has this code:
>
> /* Read the OOB data to determine if the block is valid.
> * If the block is damaged, then byte 5 of the OOB data will
> * have at least 2 zero bits.
> */
Thats hard to say, as the datasheets tell different stories.
But most of them say, that any bit set to zero marks the block bad
--
Thomas
________________________________________________________________________
"Free software" is a matter of liberty, not price. To understand the concept,
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________________________________________________________________________
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mail: tglx@linutronix.de
next prev parent reply other threads:[~2004-04-15 18:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-15 16:39 NAND bad blocks J.D. Bakker
2004-04-15 18:52 ` Thomas Gleixner [this message]
2004-04-15 22:35 ` Charles Manning
2004-04-16 0:50 ` J.D. Bakker
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