linux-kernel - Re: [PATCH v4 3/3] coccinelle: Add script to check for platform_get

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Date:   Wed, 24 Jul 2019 11:21:54 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Markus Elfring <Markus.Elfring@....de>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>, cocci@...teme.lip6.fr,
        kernel-janitors@...r.kernel.org
Cc:     Gilles Muller <Gilles.Muller@...6.fr>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        linux-kernel@...r.kernel.org, Andrzej Hajda <a.hajda@...sung.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Mark Brown <broonie@...nel.org>, Rob Herring <robh@...nel.org>,
        Russell King <linux@...linux.org.uk>
Subject: Re: [PATCH v4 3/3] coccinelle: Add script to check for platform_get_irq() excessive prints

Quoting Markus Elfring (2019-07-24 02:30:16)
> I would prefer to concentrate the usage of SmPL disjunctions on changing
> implementation details so that the specification of duplicate code
> can be avoided.
> 
> 
> > +(
> > +platform_get_irq(E, ...)
> > +|
> > +platform_get_irq_byname(E, ...)
> > +);
> 
> Function names:
> 
> +(platform_get_irq
> +|platform_get_irq_byname
> +)(E, ...);
> 
> 
> > +if ( \( ret < 0 \| ret <= 0 \) )
> 
> Comparison operators:
> 
> +if (ret \( < \| <= \) 0)
> 

Thanks. Will fold the above two in.

> 
> > +if (ret != -EPROBE_DEFER)
> 
> Is it appropriate to treat this error code check as optional
> by the shown transformation approach?
> Can this case distinction be omitted?

I don't know what you mean here. Do you want me to drop this part so
that EPROBE_DEFER checks don't get removed?