linux-kernel - Re: [PATCH] staging: media: rkvdec: Constify static struct v4l2_m2m

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Message-ID: <163429634048.4171071.2327108342733912267@Monstersaurus>
Date:   Fri, 15 Oct 2021 12:12:20 +0100
From:   Kieran Bingham <kieran.bingham@...asonboard.com>
To:     Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: Re: [PATCH] staging: media: rkvdec: Constify static struct v4l2_m2m_ops

Quoting Rikard Falkeborn (2021-10-12 23:11:44)
> The only usage of rkvdec_m2m_ops is to pass its address to v4l2_m2m_init(),
> which takes a pointer to const v4l2_m2m_ops as argument. Make it const
> to allow the compiler to put it in read-only memory.
> 
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>

Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>

> ---
>  drivers/staging/media/rkvdec/rkvdec.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/media/rkvdec/rkvdec.c b/drivers/staging/media/rkvdec/rkvdec.c
> index bf00fe6534a3..28aab5c7fe33 100644
> --- a/drivers/staging/media/rkvdec/rkvdec.c
> +++ b/drivers/staging/media/rkvdec/rkvdec.c
> @@ -677,7 +677,7 @@ static void rkvdec_device_run(void *priv)
>                 rkvdec_job_finish(ctx, VB2_BUF_STATE_ERROR);
>  }
>  
> -static struct v4l2_m2m_ops rkvdec_m2m_ops = {
> +static const struct v4l2_m2m_ops rkvdec_m2m_ops = {
>         .device_run = rkvdec_device_run,
>  };
>  
> -- 
> 2.33.0
>