linux-kernel - Re: [PATCH 12/12] mmc: bcm2835: constify mmc_host

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Date:   Mon, 31 Jul 2017 07:55:16 +0200
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Julia Lawall <Julia.Lawall@...6.fr>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     bhumirks@...il.com, kernel-janitors@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Eric Anholt <eric@...olt.net>, linux-mmc@...r.kernel.org,
        linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/12] mmc: bcm2835: constify mmc_host_ops structures

Am 29.07.2017 um 07:59 schrieb Julia Lawall:
> The mmc_host_ops structure is only stored in the ops field of an
> mmc_host structure, which is declared as const.  Thus the mmc_host_ops
> structure itself can be const.
>
> Done with the help of Coccinelle.
>
> // <smpl>
> @r disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct mmc_host_ops i@p = { ... };
>
> @ok1@
> struct mmc_host *mmc;
> identifier r.i;
> position p;
> @@
> mmc->ops = &i@p
>
> @bad@
> position p != {r.p,ok1.p};
> identifier r.i;
> struct mmc_host_ops e;
> @@
> e@i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> static
> +const
>  struct mmc_host_ops i = { ... };
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

Acked-by: Stefan Wahren <stefan.wahren@...e.com>