linux-kernel - Re: Coccinelle: api: add devm_platform_ioremap

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Date:   Tue, 11 Jun 2019 22:40:25 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Markus Elfring <Markus.Elfring@....de>,
        Julia Lawall <julia.lawall@...6.fr>,
        Himanshu Jha <himanshujha199640@...il.com>
Cc:     cocci@...teme.lip6.fr, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>
Subject: Re: Coccinelle: api: add devm_platform_ioremap_resource script

On 09.06.19 10:55, Markus Elfring wrote:

<snip>

>> But there is not usually any interesting formatting on the left side of an
>> assignment (ie typically no newlines or comments).
> 
> Is there any need to trigger additional source code reformatting?
> 
>> I can see no purpose to factorizing the right parenthesis.
> 
> These characters at the end of such a function call should be kept unchanged.

Agreed. OTOH, we all know that spatch results still need to be carefully
checked. I suspect trying to teach it all the formatting rules of the
kernel isn't an easy task.

> The flag “IORESOURCE_MEM” is passed as the second parameter for the call
> of the function “platform_get_resource” in this refactoring.

In that particular case, we maybe should consider separate inline
helpers instead of passing this is a parameter.

Maybe it would even be more efficient to have completely separate
versions of devm_platform_ioremap_resource(), so we don't even have
to pass that parameter on stack.


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287