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From: "Andriy Korud" <a.korud@vector.com.pl>
To: <linux-mtd@lists.infradead.org>
Subject: Please explain bbt_create (problems)
Date: Fri, 15 Jul 2005 16:18:34 +0200	[thread overview]
Message-ID: <60E856FD577CC04BA3727AF4122D3F161135CD@3bit.vector.com.pl> (raw)

Hi, 
I'm trying to understand how initial bbt_ceate works? 
I have NAND chip erased for jffs2 (flash_erasall -j) with some data in OOB (jffs2 clean masrkers). And bbt_create() calls check_pattern() which compare each byte with 0xff, in my case comparision fails (jffs2 cleanmarker != 0xff) and I have every block marked as bad.
Should not check_pattern() checks only byte at 0x05 in OOB (according to http://www.linux-mtd.infradead.org/tech/mtdnand/x255.html )? 
Also is it possible to scan chip for bbt starting from certain block (not 0) without dirty changes in mtd code?

Thanks in advance,
Andriy Korud

             reply	other threads:[~2005-07-15 14:19 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-15 14:18 Andriy Korud [this message]
2005-07-15 14:40 ` Please explain bbt_create (problems) Thomas Gleixner

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