linux-kernel - Re: [PATCH v2 1/2] regulator: add support for regulators on the ab8500 MFD

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Date:	Wed, 27 Oct 2010 10:56:21 -0700
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Thiago Farina <tfransosi@...il.com>
Cc:	Sundar Iyer <sundar.iyer@...ricsson.com>, lrg@...mlogic.co.uk,
	sameo@...ux.intel.com, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	STEricsson_nomadik_linux@...t.st.com,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Bengt JONSSON <bengt.g.jonsson@...ricsson.com>
Subject: Re: [PATCH v2 1/2] regulator: add support for regulators on the
 ab8500 MFD

On Wed, Oct 27, 2010 at 03:42:53PM -0200, Thiago Farina wrote:
> On Wed, Oct 27, 2010 at 3:33 PM, Mark Brown

> > There is no reason to do this, logical values are treated as 0 and 1 in
> > C.  Using false and true is clear and won't cause any difference in
> > code.

> In C99 I suppose that is true and legal?

Yes.  C has always used 1 and 0 as the numerical mappings for logical
values, the addition of the keywords did not change them.

> >> Maybe like this?
> >> return (ret & info->mask) ? 1: 0;

> > No, that's needlessly obfuscated.

> Obfuscated? What you mean? It is a driver, and people reading and
> writing a driver would know what it means, no?

Adding the ternery operator just makes the code more noisy for no
benefit.

> Would be much simpler if it was just (like done in ab3100.c):

> return (ret & info->mask);

Yes, though there's no problem with the current code either.
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