linux-kernel - Re: [PATCH v3 1/9] regmap: Introduce regmap_get_max

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Message-ID: <1427239395.12126.22.camel@perches.com>
Date:	Tue, 24 Mar 2015 16:23:15 -0700
From:	Joe Perches <joe@...ches.com>
To:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:	Mark Brown <broonie@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Rob Herring <robh+dt@...nel.org>,
	Kumar Gala <galak@...eaurora.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	arnd@...db.de, sboyd@...eaurora.org
Subject: Re: [PATCH v3 1/9] regmap: Introduce regmap_get_max_register.

On Tue, 2015-03-24 at 23:05 +0000, Srinivas Kandagatla wrote:
> On 24/03/15 22:36, Mark Brown wrote:
> >> +int regmap_get_max_register(struct regmap *map)
> >> +{
> >> +	return map->max_register ? : -EINVAL;
> >> +}
> >
> > Please write the logic out properly, don't abuse the ternery operator.
> Am happy to change it to your preference in next version, but this GNU 
> extensions widely used in the kernel
> 
> $  grep -rR "return.*? :" ./linux | wc -l
> 115

Double that when you add the ?: variants

$ git grep -E "return.*\?\s*:" | wc -l
253

There are ~530 uses like:

	return <foo> ? <foo> :

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