Messages in this thread | | | From | Andy Shevchenko <> | Date | Wed, 21 Jul 2021 20:33:05 +0300 | Subject | Re: [PATCH] iio: accel: fxls8962af: fix i2c dependency |
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On Wed, Jul 21, 2021 at 7:12 PM Arnd Bergmann <arnd@kernel.org> wrote: > On Wed, Jul 21, 2021 at 5:52 PM Andy Shevchenko > <andy.shevchenko@gmail.com> wrote: > > On Wed, Jul 21, 2021 at 6:13 PM Arnd Bergmann <arnd@kernel.org> wrote:
...
> > > config FXLS8962AF > > > tristate > > > + depends on I2C || !I2C # cannot be built-in for modular I2C > > > > Can you enlighten me how this will not be a no-op? > > This part does nothing, it only causes a warning when FXLS8962AF > gets selected =y when I2C=m.
This is something new to me. But shouldn't the other chunk guarantee that warning won't happen?
> The important bit is the other hunk that adds the same dependency > to the FXLS8962AF_SPI symbol, which enforces that either I2C > is completely disabled, or treated as a dependency that prevents > the user from setting FXLS8962AF_SPI=y when that would cause > a link failure.
This part I understand and neither object to nor comment on.
> The effect is similar to a 'depends on SND_SOC_I2C_AND_SPI', > except we only need it on the SPI symbol here because the SPI > core cannot be in a module itself.
I see. Thanks for elaboration.
-- With Best Regards, Andy Shevchenko
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