[Yaffs] Yaffs/mtd ECC problem: "**>>mtd ecc error"

[Charles Manning]

On Saturday 05 November 2005 04:07, Claudio Lanconelli wrote:
> Hi,
> I find the solutions here
> http://www.aleph1.co.uk/pipermail/yaffs/2005q3/001358.html.
> Why this patch is not committed to CVS? Test for kernel 2.6 is wrong
> since every kernel
> with latest MTD should have .eccbytes = 6 initialized

Thanx Claudio

Yes, even people working with older kernels will likely patch in the latest 
mtd.

I have removed the test.

>
> Regards,
> Claudio Lanconelli
>
> RCS file: /home/aleph1/cvs/yaffs2/yaffs_mtdif.c,v
> retrieving revision 1.12
> diff -u -r1.12 yaffs_mtdif.c
> --- yaffs_mtdif.c    20 Sep 2005 23:14:14 -0000    1.12
> +++ yaffs_mtdif.c    4 Nov 2005 13:03:06 -0000
> @@ -28,9 +28,7 @@
>
>  static struct nand_oobinfo yaffs_oobinfo = {
>      .useecc = 1,
> -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,8))
>      .eccbytes = 6,
> -#endif
>      .eccpos = {8, 9, 10, 13, 14, 15}
>  };
>
> Claudio Lanconelli wrote:
> > Hi,
> > Till last week I used yaffs (old yaffs1 module) without problems on my
> > Microblaze board
> > with uClinux 2.4.31-uc0 and a Samsung K9F5608 standard 32MB Nand
> > flash. I wrote my own
> > driver to interface the nand flash in MTD.
> >
> > Now I switched to latest CVS yaffs2 (in yaffs1 mode) + latest CVS MTD
> > patched for uClinux
> > 2.4.31.
> > If I configure YAFFS to use its own ECC calculations it seems to work
> > fine, but if I try to
> > use MTD ECC calculations ( #undef CONFIG_YAFFS_DOES_ECC ) a lot of
> > error messages appears like
> > this:
> > **>>mtd ecc error unfixed on chunk 1:0
> > **>>mtd ecc error unfixed on chunk 1:1
> > **>> yaffs: getBlockInfo block 0 is not valid
> > **>>Block 0 marked for retirement
>
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