Re: [PATCH RESEND] omap : nand : fix subpage ecc issue with prefetch

[Artem Bityutskiy <dedekind1@gmail.com>]

On Wed, 2011-05-11 at 21:17 +0530, Kishore Kadiyala wrote:
> When reading/writing a subpage (When HW ECC is not available/enabled)
> for number of bytes not aligned to 4, the mis-aligned bytes are handled
> first (by cpu copy method) before enabling the Prefetch engine to/from
> 'p'(start of buffer 'buf'). Then it reads/writes rest of the bytes with
> the help of Prefetch engine, if available, or again using cpu copy method.
> Currently, reading/writing of rest of bytes, is not done correctly since
> its trying to read/write again to/from begining of buffer 'buf',
> overwriting the mis-aligned bytes.
> 
> Read & write using prefetch engine got broken in commit '2c01946c'.
> We never hit a scenario of not getting 'gpmc_prefetch_enable' call
> success. So, problem did not get caught up.
> 
> Signed-off-by: Kishore Kadiyala <kishore.kadiyala@ti.com>
> Signed-off-by: Vimal Singh <vimal.newwork@gmail.com>
> Reported-by: Bryan DE FARIA <bdefaria@adeneo-embedded.com>
> Cc: stable@kernel.org [2.6.35+]

Pushed to l2-mtd-2.6.git, thanks.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)

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