Re: [linusw-pinctrl:devel 26/32] drivers/pinctrl/freescale/pinctrl-imx.c:260:9: error: call to undeclared function 'pinmux_generic_get_function'; ISO C99 and later do not support implicit function declarations

["Arnd Bergmann" <arnd@xxxxxxxx>]

On Mon, Sep 5, 2022, at 3:37 PM, Linus Walleij wrote:
> On Mon, Sep 5, 2022 at 3:30 PM Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> >
> What annoys me is that the core pinmux/pinctrl part should not
> depend on HAS_IOMEM... :(

Does it actually still depend on it? s390 now has

config HAS_IOMEM
        def_bool PCI

and compile-test has:

config COMPILE_TEST
        bool "Compile also drivers which will not load"
        depends on HAS_IOMEM

so s390 should work both with and without IOMEM here, as long
as drivers do the usual 'depends on ARCH_MXC || COMPILE_TEST'
dance.

The only problem I see is a missing 'select GENERIC_PINMUX_FUNCTIONS'.
There may be other drivers that have the same issue. Would it
make sense to just always build these into the pinctrl
subsystem?

     Arnd