On Tue, 26 Apr 2016 20:36:16 +0200
Rafał Miłecki <zaj...@gmail.com> wrote:
> Our array nand_ecc_algos doesn't specify mappings for all available
> enum nand_ecc_algo values. The one missing there is NAND_ECC_UNKNOWN
> as this value is reserved for algorithm not being specified at all.
> It means we have to be careful when iterating this array and handle
> NULL values.
>
> Signed-off-by: Rafał Miłecki <zaj...@gmail.com>
> ---
> Hi Boris,
>
> Sorry for this crash in nand subsystem :( If you think it's OK you may
> pick this patch as a fixup for
> c6e002a7ca9f ("mtd: nand: add support for "nand-ecc-algo" DT property")
> ---
> drivers/mtd/nand/nand_base.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
> index a5417a0..0eaa9dc 100644
> --- a/drivers/mtd/nand/nand_base.c
> +++ b/drivers/mtd/nand/nand_base.c
> @@ -4016,6 +4016,8 @@ static int of_get_nand_ecc_algo(struct device_node *np)
> err = of_property_read_string(np, "nand-ecc-algo", &pm);
> if (!err) {
> for (i = 0; i < ARRAY_SIZE(nand_ecc_algos); i++)
> + if (!nand_ecc_algos[i])
> + continue;
Can we add an "unknown" entry, or start iterating at NAND_ECC_HAMMING
or NAND_ECC_UNKNOWN + 1 instead of adding this extra test?
BTW, since the original commit has been applied recently I'll squash the
changes into the previous commit and rebase my branch instead of adding
a new patch (I hate breaking bisectability).
--
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
