linux-kernel - Re: [Cocci] [PATCH 1/1] scripts/coccinelle: use BIT() macro if possible

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Date:	Sun, 27 Apr 2014 11:36:22 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Javier Martinez Canillas <javier@...hile0.org>
cc:	Wolfram Sang <wsa@...-dreams.de>, Michal Marek <mmarek@...e.cz>,
	Nicolas Palix <nicolas.palix@...g.fr>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Coccinelle <cocci@...teme.lip6.fr>
Subject: Re: [Cocci] [PATCH 1/1] scripts/coccinelle: use BIT() macro if
 possible



On Sun, 27 Apr 2014, Javier Martinez Canillas wrote:

> Hello Wolfram,
> 
> Thanks a lot for your feedback.
> 
> On Sun, Apr 27, 2014 at 7:14 AM, Wolfram Sang <wsa@...-dreams.de> wrote:
> > On Sun, Apr 27, 2014 at 02:29:46AM +0200, Javier Martinez Canillas wrote:
> >> Using the BIT() macro instead of manually shifting bits
> >> makes the code less error prone and also more readable.
> >
> > Does it? It is a taste thing, yet I don't think it makes the code that
> > much more readable that it is worth changing the whole tree.
> >
> 
> I believe there is a reason for that macro but yes I agree with you
> that is a matter of taste and the it shouldn't be enforced.
> 
> I'm doing a big refactoring for the GPIO subsystem and was told to use
> coccinelle so this patch was part of my learning. I posted it because
> I thought that it could be useful but I don't mind the patch to be
> dropped if that is not the case.

Perhaps it could be useful in files that already use BIT somewhere?

julia
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