Re: [PATCHv5] mmc: remove MMC_CAP_ERASE to enable trim in eMMC/SD Device

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On 26 May 2014 10:29, Jaehoon Chung <jh80.chung@xxxxxxxxxxx> wrote:
> From: Puthikorn Voravootivat <puthik@xxxxxxxxxxxx>
>
> Remove MMC_CAP_ERASE from all host as it does not make
> sense that the eMMC/SD device erase feature should be
> controlled by the host cap. This make trim and/or discard
> feature usable in the supported eMMC/SD device.
>
> Signed-off-by: Puthikorn Voravootivat <puthik@xxxxxxxxxxxx>
> Acked-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>

I like the idea behind this patch.

At same time I know we have some bugs regarding TRIM/ERASE/DISCARD
operations. A better approach is to solve these first.

http://www.spinics.net/lists/linux-mmc/msg26249.html

The are some older threads on this topic as well.

Kind regards
Ulf Hansson
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