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SubjectRe: [PATCH] staging:mt29f_spinand: MT29F2G failing as only 16-bit arguments and variables used for addressing.
On Wed, Aug 01, 2018 at 03:55:30PM +0200, Miquel Raynal wrote:
> Hi Dan,
>
> Dan Carpenter <dan.carpenter@oracle.com> wrote on Wed, 1 Aug 2018
> 15:05:51 +0300:
>
> > On Wed, Aug 01, 2018 at 11:24:19AM +0800, Jheng-Jhong Wu wrote:
> > > For NAND flash chips with more than 1Gbit (e.g. MT29F2G) more than 16 bits
> > > are necessary to address the correct page. The driver sets the address for
> > > more than 16 bits, but it uses 16-bit arguments and variables (these are
> > > page_id, block_id, row) to do address operations. Obviously, these
> > > arguments and variables cannot deal with more than 16-bit address.
> > >
> > > Signed-off-by: Jheng-Jhong Wu <goodwater.wu@gmail.com>
> >
> > This seems reasonable... It would be needed to make commit 6efb21d6d0e7
> > ("staging:mt29f_spinand: MT29F2G failing as only 16 bits used for
> > addressing.") work. It also fixes a static checker warning.
> >
> > My only concern is that the mtd/nand code seems to use -1 as a magical
> > page_id. For example:
>
> I guess you missed Boris' comment: this driver is very likely to be
> removed. A SPI-NAND framework has been added. It does not use the raw
> NAND framework anymore, which was wrong anyway.
>

We should probably revert commit 6efb21d6d0e7 ("staging:mt29f_spinand:
MT29F2G failing as only 16 bits used for addressing.") in that case if
all it does is add static checker warnings...

regards,
dan carpenter


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