Re: [PATCH v2] regulator: s2mps11: Simplify expression used in BUILD_BUG_ON

From: Andi Shyti
Date: Wed Feb 17 2016 - 20:46:28 EST


> >> Following BUILD_BUG_ON using a variable fails for some of the compilers
> >> and optimization levels (reported for gcc 4.9):
> >> var = ARRAY_SIZE(s2mps15_regulators);
> >> BUILD_BUG_ON(S2MPS_REGULATOR_MAX < var);
> >> Fix this by using ARRAY_SIZE directly.
> >>
> >> Additionally add missing BUILD_BUG_ON check for S2MPS15 device (the
> >> check ensures that internal arrays are big enough to hold data for all
> >> of regulators on all devices).
> >>
> >> Reported-by: Arnd Bergmann <arnd@xxxxxxxx>
> >> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> >>
> >
> > [...]
> >
> >> case S2MPS11X:
> >> s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
> >
> > Why don't we remove rdev_num at all? It's not used that much
> > other than in the probe function.
>
> Remove from probe? It is used in probe and removal would make the code
> more complicated than it should be.

no, I mean remove it from s2mps11_info. Other than in the probe
this value is used only once in s2mps11_pmic_dt_parse() (which is
called by probe()).

Andi