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

From Andi Shyti <andi.shyti@samsung.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2] regulator: s2mps11: Simplify expression used in BUILD_BUG_ON
Date 2016-02-18 02:50 +0100
Message-ID <r3lTc-6Da-3@gated-at.bofh.it> (permalink)
References <r3kNs-5NL-9@gated-at.bofh.it> <r3lJv-6xI-9@gated-at.bofh.it> <r3lJv-6xI-7@gated-at.bofh.it>
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> >> 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@arndb.de>
> >> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> >>
> > 
> > [...]
> > 
> >>  	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

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[PATCH v2] regulator: s2mps11: Simplify expression used in BUILD_BUG_ON Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-02-18 01:40 +0100
  Re: [PATCH v2] regulator: s2mps11: Simplify expression used in  BUILD_BUG_ON Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-02-18 02:40 +0100
    Re: [PATCH v2] regulator: s2mps11: Simplify expression used in  BUILD_BUG_ON Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2016-02-18 02:50 +0100
      Re: [PATCH v2] regulator: s2mps11: Simplify expression used in BUILD_BUG_ON Arnd Bergmann <arnd@arndb.de> - 2016-02-18 10:10 +0100
    Re: [PATCH v2] regulator: s2mps11: Simplify expression used in  BUILD_BUG_ON Andi Shyti <andi.shyti@samsung.com> - 2016-02-18 02:50 +0100
  Re: [PATCH v2] regulator: s2mps11: Simplify expression used in  BUILD_BUG_ON Andi Shyti <andi.shyti@samsung.com> - 2016-02-18 02:40 +0100
  Re: [PATCH v2] regulator: s2mps11: Simplify expression used in BUILD_BUG_ON Arnd Bergmann <arnd@arndb.de> - 2016-02-18 10:10 +0100

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