On Sun, Nov 7, 2010 at 9:40 AM, [AvataR] <public.avatar@xxxxxxxxx> wrote:
> Hi. After moving to upstream 2.6.3{5,6,7} kernels, i forced to use jffs2
> instead of ubifs, because of lot CRC errors. If i use prefetch/dma, i
> can attach to ubi, make volume, write data, reboot - and got lots of CRC
> errors. Without prefetch i just couldn't do anything to ubi.
>
> Looks like hw/sw bug in ubi
Looks like Sukumar's recent changes broke subpage reads that are
needed for UBI to operate. You can try commenting out #define
CONFIG_MTD_NAND_OMAP_HWECC in drivers/mtd/nand/omap2.c and disabling
MTD_NAND_OMAP_PREFETCH, with that it mostly works for me but sometimes
spits out ECC error or two.
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