Re: [PATCH] iio: accel: fxls8962af: fix i2c dependency

From: Arnd Bergmann
Date: Wed Jul 21 2021 - 14:40:51 EST


On Wed, Jul 21, 2021 at 7:34 PM Andy Shevchenko
<andy.shevchenko@xxxxxxxxx> wrote:
> On Wed, Jul 21, 2021 at 7:12 PM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
> > On Wed, Jul 21, 2021 at 5:52 PM Andy Shevchenko
> > <andy.shevchenko@xxxxxxxxx> wrote:
> > > On Wed, Jul 21, 2021 at 6:13 PM Arnd Bergmann <arnd@xxxxxxxxxx> 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?

Correct, it works without that, but if that fails after something changes,
this version would provide better diagnostics than the FXLS8962AF
core driver causing a link failure, and I found it documents better
why the other driver needs the dependency.

Let me know if you prefer me to resend the patch without this hunk.

Arnd