From: Juergen Beisert <jbeisert@eurodsn.de>
To: linux-mtd@lists.infradead.org
Subject: NAND-Flash ECC data not used
Date: Tue, 8 Jul 2003 10:01:10 +0200 [thread overview]
Message-ID: <200307081001.10555.jbeisert@eurodsn.de> (raw)
Hello all,
I have tried to use a 16MiB NAND flash in my application. It seems to work,
but it also seem that the driver is not using the ECC data. I have derived my
small driver from the spia.c source and have added the line
this->eccmode=NAND_ECC_SOFT;
before calling nand_scan(). nand_scan() inserts the ECC check routines
correctly in the structure. But later, if the jffs2 calls the driver to read
data from flash, it calls nand_read_ecc() with parameter oobsel = 0. So the
line
int eccmode = oobsel ? this->eccmode : NAND_ECC_NONE;
in nand_read_ecc() switches back to NONE ecc mode while reading.
Any ideas what's going wrong?
Juergen Beisert
next reply other threads:[~2003-07-08 8:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-08 8:01 Juergen Beisert [this message]
2003-07-08 10:42 ` NAND-Flash ECC data not used Thomas Gleixner
2003-07-08 12:05 ` Juergen Beisert
2003-07-08 16:11 ` Thomas Gleixner
2003-07-09 14:43 ` Juergen Beisert
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