From: Ralf Rösch <ralf.roesch@rw-gmbh.de>
Date: Thu, 30 Dec 2010 09:30:11 +0000 (+0100)
Subject: mtd: txx9ndfmc: limit transfer bytes to 512 (ECC provides 6 bytes max)
X-Git-Tag: v2.6.38-rc1~21^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24ac9a94f9e21ea71d877b0c80867d625b68bec2;p=pandora-kernel.git

mtd: txx9ndfmc: limit transfer bytes to 512 (ECC provides 6 bytes max)

See commit: c0cbfd0e81d879a950ba6f0df3f75ea30c5ab16e
Using __nand_correct_data() helper function, this driver can read 512
byte (with 6 byte ECC) at a time.

This is correct, but not more:
With NAND chips providing page sizes > 512 Bytes
chip->ecc.bytes are calculated > 6 in txx9ndfmc_nand_scan.
According the data sheet there are (only) 6 bytes ECC available.

After applying the patch a Hynix 512M*8 with 2KiB page size could be
successfully formatted and used with an ubifs file system.

Signed-off-by: Ralf Roesch <ralf.roesch@rw-gmbh.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

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