Re: [PATCH] mtd: rawnand: ingenic: fix ingenic_ecc dependency

[Arnd Bergmann]

On Mon, Jun 17, 2019 at 1:24 PM Paul Cercueil <paul@xxxxxxxxxxxxxxx> wrote:

> I think there's a better way to fix it, only in Kconfig.
>
> * Add a bool symbol MTD_NAND_INGENIC_USE_HW_ECC
> * Have the three ECC/BCH drivers select this symbol instead of
>   MTD_NAND_INGENIC_ECC
> * Add the following to the MTD_NAND_JZ4780 config option:
>   "select MTD_NAND_INGENIC_ECC if MTD_NAND_INGENIC_USE_HW_ECC"

I don't see much difference to my approach here, but if you want
to submit that version with 'Reported-by: Arnd Bergmann <arnd@xxxxxxxx>',
please do so.

Yet another option would be to use Makefile code to link both
files into one module, and remove the EXPORT_SYMBOL statements:

obj-$(CONFIG_MTD_NAND_JZ4780) += jz4780_nand.o
jz4780_nand-y += ingenic_nand.o
jz4780_nand-$(CONFIG_MTD_NAND_INGENIC_ECC) += ingenic_ecc.o

        Arnd