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        LKML <linux-kernel@vger.kernel.org>,
        Coccinelle <cocci@systeme.lip6.fr>,
        Gilles Muller <Gilles.Muller@lip6.fr>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
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        Yi Wang <wang.yi59@zte.com.cn>
References: <1552616681-17985-1-git-send-email-wen.yang99@zte.com.cn>
Subject: Re: [PATCH] coccinelle: semantic patch for missing of_node_put
To:     Wen Yang <wen.yang99@zte.com.cn>,
        Julia Lawall <julia.lawall@lip6.fr>
From:   Markus Elfring <Markus.Elfring@web.de>
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Date:   Fri, 15 Mar 2019 17:24:27 +0100
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> +/// Find missing of_node_put
> +///
> +// Confidence: Moderate

How much would you like to improve the situation around recurring software
development concerns for such source code analysis approaches?


> +virtual report
> +virtual org

I would interpret the provided SmPL code in the way that it will not gener=
ate
adjusted (patched) C code so far.
Source code search results will be presented by these operation modes.

How do you think about to exchange the word =E2=80=9Cpatch=E2=80=9D by =E2=
=80=9Ccode search=E2=80=9D
at affected places (and in the subject) then?


> +@r exists@
> +local idexpression struct device_node *x;
> +identifier f;
> +statement S,S1,S2;
> +expression e,e1;
> +position p1,p2;
> +type T,T1;
> +@@
> +
> +(
> +x =3D f@p1(...);

How do you think about to express any more constraints for this function c=
all?


> +... when !=3D e =3D (T)x

Will it be safer to add another exclusion for the initial assignment targe=
t?


> + when !=3D if (x) { ... of_node_put(x) ... }

I find the specification of this extra condition check questionable.


Should Masahiro Yamada be explicitly notified also for this attempt
to integrate another SmPL script?

Regards,
Markus