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SubjectRe: [PATCH v6] mmc: card: Skip secure option for MoviNAND.
Date
Hi,

On Wed, Aug 29 2012, IAN CHEN wrote:
> For several MoviNAND, there are some known issue with secure option.
> For these specific MoviNAND device, we skip secure option.
>
> You could refer this discussion in XDA developers.
> http://forum.xda-developers.com/showthread.php?t=1644364
> https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB
>
> Signed-off-by: Ian Chen <ian.cy.chen@samsung.com>
> Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
> Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Thanks. We should explain the nature of the bug in the commit message,
so that users and the stable@ maintainers know how bad the problem is
by reading the patch. (This should go to stable@, right? Do you know
which kernel versions are affected?)

I'll add something like this, unless you have a better proposal:

==
For several MoviNAND, there are some known issues with secure option.
For these specific MoviNAND device, we skip secure option.

Specifically, there is a bug in the eMMC firmware that causes
unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE
enabled.

You could refer this discussion in XDA developers.
http://forum.xda-developers.com/showthread.php?t=1644364
https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB
==

- Chris.
--
Chris Ball <cjb@laptop.org> <http://printf.net/>
One Laptop Per Child


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