linux-kernel - Re: [PATCH] staging: rtl8192u: bool tests don't need comparisons

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Date:	Tue, 23 Jun 2015 15:37:20 +0200
From:	Frans Klaver <fransklaver@...il.com>
To:	Luis de Bethencourt <luis@...ethencourt.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Antoine Schweitzer-Chaput <antoine@...weitzer-chaput.fr>,
	Cristina Opriceana <cristina.opriceana@...il.com>,
	Aya Mahfouz <mahfouz.saif.elyazal@...il.com>,
	Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se>,
	Koray Gulcu <koray.gulcu@....edu.tr>,
	Greg Donald <gdonald@...il.com>,
	Lorenzo Stoakes <lstoakes@...il.com>,
	Ebru Akagunduz <ebru.akagunduz@...il.com>,
	Karthik Nayak <karthik.188@...il.com>,
	devel@...verdev.osuosl.org
Subject: Re: [PATCH] staging: rtl8192u: bool tests don't need comparisons

On Tue, Jun 23, 2015 at 3:21 PM, Luis de Bethencourt
<luis@...ethencourt.com> wrote:

>> >         if (dm_digtable.dig_algorithm_switch) {
>> > @@ -3062,7 +3062,8 @@ static void dm_dynamic_txpower(struct net_device *dev)
>> >                         priv->bDynamicTxLowPower = false;
>> >                 } else {
>> >                         /* high power state check */
>> > -                       if (priv->undecorated_smoothed_pwdb < txlowpower_threshold && priv->bDynamicTxHighPower == true)
>> > +                       if (priv->undecorated_smoothed_pwdb <
>> > +                           txlowpower_threshold && priv->bDynamicTxHighPower)
>> >                                 priv->bDynamicTxHighPower = false;
>>
>> Oh, this has a misleading air hanging over it. It focuses the eyes on
>> "txlowpower_threshold && priv->bDynamicTxHighPower", while that
>> probably isn't the intent.
>>
>> Frans
>
> I agree, and wasn't sure what the best way to deal with was.
>
> The following doesn't mislead but goes above 80 characters.
>                         if (priv->undecorated_smoothed_pwdb < txlowpower_threshold &&
>                             priv->bDynamicTxHighPower == true)
>
> It is better than the original but it doesn't completely fix it.
>
> If this is a better compromise I can update the patch.

If we keep people's internal parsers working properly, I think having
a line of three characters too long is a fair compromise. Besides
that, there are a lot more lines of code in that file that need to be
brought back to under 80 characters.

If you really care about that line length, precede with a patch (or
two) that changes those insanely long (local!) variable names, so that
you can break up the line right away.

Have fun,
Frans
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