On Thu, Jun 26, 2014 at 10:42:48PM +0200, Michael Grzeschik wrote:
> The current approach of the read_page function is to iterate over all
> subpages and call the correct_data function. The correct_data function
> currently does the same. It iterates over all subpages and checks for
> correctable and uncorrectable data. This redundant call for each
> subpage leads to miscalculations.
>
> This patch changes the driver to use its own read_page function in which
> we call the correct_data function only once per page. With that we do
> the failure and correct statistics counting inside this function.
>
> Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de>
> ---
> drivers/mtd/nand/mxc_nand.c | 73
> ++++++++++++++++++++++++++++++++++++++++++---
> 1 file changed, 69 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
> index 7fd495e..09e3682 100644
> --- a/drivers/mtd/nand/mxc_nand.c
> +++ b/drivers/mtd/nand/mxc_nand.c
[snip]
> @@ -673,15 +728,21 @@ static int mxc_nand_correct_data_v2_v3(struct mtd_info
> *mtd, u_char *dat,
> do {
> err = ecc_stat & ecc_bit_mask;
> if (err > err_limit) {
> - printk(KERN_WARNING "UnCorrectable RS-ECC Error\n");
> - return -1;
> + broken++;
> } else {
> ret += err;
> }
> ecc_stat >>= 4;
> } while (--no_subpages);
>
> - pr_debug("%d Symbol Correctable RS-ECC Error\n", ret);
> + mtd->ecc_stats.corrected += ret;
> + if (ret)
> + printk("%d Symbol Correctable RS-ECC Error\n", ret);
This was ment to be pr_debug as before.
--
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