linux-kernel - Re: [PATCH v6 4/4] thermal: Add Tegra SOCTHERM thermal management driver

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Date:	Mon, 29 Sep 2014 10:29:05 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Mikko Perttunen <mikko.perttunen@...si.fi>
Cc:	Mikko Perttunen <cyndis@...si.fi>, edubezval@...il.com,
	swarren@...dotorg.org, linux-pm@...r.kernel.org,
	linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, juha-matti.tilli@....fi,
	Mikko Perttunen <mperttunen@...dia.com>
Subject: Re: [PATCH v6 4/4] thermal: Add Tegra SOCTHERM thermal management
 driver

On Fri, Sep 26, 2014 at 11:28:31PM +0300, Mikko Perttunen wrote:
> On 09/26/2014 02:45 PM, Thierry Reding wrote:
[...]
> > I think a more idiomatic way to write this would be:
> >
> > static int
> > calculate_tsensor_calibration(const struct tegra_tsensor *sensor,
> > 			      struct tsensor_shared_calibration shared,
> > 			      u32 *calib)
> 
> If I do that, it will go over the 80 character limit by quite a few
> characters, which is why I didn't use that style. Personally I'm fine with
> either style.

The above doesn't exceed the 80 character limit. Putting the return
value and the static keyword on a separate line is a pretty common way
to reduce line length.

> >
> >While at it, perhaps make shared a const * instead of passing it in by
> >value?
> 
> That is possible, but I'm not sure what the difference would be. Is there a
> style rule forbidding by-value compound types? (Also if I change the style,
> it would go over 80 characters by even more.)

No it doesn't. The below fits within 80 characters per line just fine:

static int
calculate_tsensor_calibration(const struct tegra_tsensor *sensor,
			      const struct tsensor_shared_calibration *shared,
			      u32 *calib)

Thierry

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