linux-kernel - Re: powerpc/macintosh: constify wf_sensor

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Message-Id: <3xkKq244Czz9t3F@ozlabs.org>
Date:   Fri,  1 Sep 2017 23:29:50 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Julia Lawall <Julia.Lawall@...6.fr>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: powerpc/macintosh: constify wf_sensor_ops structures

On Wed, 2017-08-02 at 21:01:45 UTC, Julia Lawall wrote:
> The wf_sensor_ops structures are only stored in the ops field of a
> wf_sensor structure, which is declared as const.  Thus the
> wf_sensor_ops structures themselves can be const.
> 
> Done with the help of Coccinelle.
> 
> // <smpl>
> @r disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct wf_sensor_ops i@p = { ... };
> 
> @ok1@
> identifier r.i;
> struct wf_sensor s;
> position p;
> @@
> s.ops = &i@p
> 
> @ok2@
> identifier r.i;
> struct wf_sat_sensor s;
> position p;
> @@
> s.sens.ops = &i@p
> 
> @bad@
> position p != {r.p,ok1.p,ok2.p};
> identifier r.i;
> struct wf_sensor_ops e;
> @@
> e@i@p
> 
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> static
> +const
>  struct wf_sensor_ops i = { ... };
> // </smpl>
> 
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/de854e54d79bc0ad5c45c5be50821b

cheers