[U-Boot] [PATCH] mtd/nand:Fix wrong usage of is_blank() in fsl_ifc_run_command

[Scott Wood]

On Fri, Jan 20, 2012 at 06:38:14PM +0530, Prabhakar Kushwaha wrote:
> Freescale IFC NAND Machine calculates ECC on 512byte sector and same is used in
> fsl_ifc_run_command() during ECC status verification. Also this sector is passed
> to is_blank() for blank checking. It is wrong at first place because
> is_blank()'s implementation checks for Page size and OOB area size. 
> is_blank() should be called per page for main and OOB area verification.
> 
> Variables name are redefined to avoid confusion between buffer and ecc sector.
> 
> Signed-off-by: Poonam Aggrwal <poonam.aggrwal at freescale.com>
> Signed-off-by: Scott Wood <scottwood at freescale.com>
> Signed-off-by: Prabhakar Kushwaha <prabhakar at freescale.com>
> ---
>  Applied upon git://git.denx.de/u-boot.git (branch master)
> 
>  This patch is based upon ifc driver patch in linuxppc-dev mailing list
>  http://patchwork.ozlabs.org/patch/136547/
> 
>  It is a replacement of my earlier patch 
>   "mtd/nand:Fix wrong address read in is_blank()"
>  http://patchwork.ozlabs.org/patch/133388/ 
> 
> 
>  drivers/mtd/nand/fsl_ifc_nand.c |   52 +++++++++++++++++++++------------------
>  1 files changed, 28 insertions(+), 24 deletions(-)

Applied to u-boot-nand-flash...

> +				/*
> +				 * Uncorrectable error.
> +				 * OK only if the whole page is blank.
> +				 *
> +				 * We disable ECCER reporting due to...
> +				 * erratum IFC-A002770 -- so report it now if we
> +				 * see an uncorrectable error in ECCSTAT.
> +				 */

...with the "..." removed from the comment.

-Scott