Re: [PATCH v3 03/24] wfx: add Makefile/Kconfig

[Kalle Valo]

Jerome Pouiller <Jerome.Pouiller@xxxxxxxxxx> writes:

> From: Jérôme Pouiller <jerome.pouiller@xxxxxxxxxx>
>
> Signed-off-by: Jérôme Pouiller <jerome.pouiller@xxxxxxxxxx>

[...]

> +wfx-$(CONFIG_SPI) += bus_spi.o
> +wfx-$(subst m,y,$(CONFIG_MMC)) += bus_sdio.o

Why this subst? And why only for MMC?

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