[PATCH RESEND] mtd: nand: allow NAND_NO_SUBPAGE_WRITE to be set from driver

[Scott Wood]

On 07/31/2012 02:33 AM, Matthieu CASTET wrote:
> Hi,
> 
> for ONFI flash (like this micron one) the information should be extracted form
> the ONFI table (programs_per_page IIRC)
> 
> This should be better than relying on the SOC driver for setting this flags.

This is for cases where the constraint is the controller, not the chip.

> Does the gpmi driver set this flag because it do not support partial write ?
> In this case why it doesn't set  chip->ecc.steps to 1 ?

Why is it better to lie about ECC geometry than to just say "subpage
writes aren't supported"?  Does/will the ECC geometry get used by upper
layers in evaluating the number of corrected bitflips?

-Scott