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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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