linux-kernel - Re: [PATCH 5/5] Coccinelle: put_device: Merge two SmPL when constraints into one

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Date:   Mon, 13 May 2019 11:30:27 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Markus Elfring <Markus.Elfring@....de>
cc:     Gilles Muller <Gilles.Muller@...6.fr>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Wen Yang <wen.yang99@....com.cn>, cocci@...teme.lip6.fr,
        linux-kernel@...r.kernel.org, Yi Wang <wang.yi59@....com.cn>
Subject: Re: [PATCH 5/5] Coccinelle: put_device: Merge two SmPL when constraints
 into one



On Mon, 13 May 2019, Markus Elfring wrote:

> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Mon, 13 May 2019 09:55:22 +0200
>
> A single parameter was repeated for a function call in two SmPL
> when constraints.
> Combine the exclusion specifications into a disjunction for the semantic
> patch language so that this argument is referenced only once there.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

NACK.  This hurts readability and gives no practical benefit.

julia

> ---
>  scripts/coccinelle/free/put_device.cocci | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/scripts/coccinelle/free/put_device.cocci b/scripts/coccinelle/free/put_device.cocci
> index 28b0be53fb3f..975cabb97d01 100644
> --- a/scripts/coccinelle/free/put_device.cocci
> +++ b/scripts/coccinelle/free/put_device.cocci
> @@ -22,8 +22,7 @@ id = of_find_device_by_node@p1(x)
>  if (id == NULL || ...) { ... return ...; }
>  ... when != put_device(&id->dev)
>      when != id = (T6)(e)
> -    when != platform_device_put(id)
> -    when != of_dev_put(id)
> +    when != \( platform_device_put \| of_dev_put \) (id)
>      when != if (id) { ... put_device(&id->dev) ... }
>      when != e1 = \( (T) \( id \| (&id->dev) \) \| get_device(&id->dev) \| (T1)platform_get_drvdata(id) \)
>  (
> --
> 2.21.0
>
>