linux-kernel - Re: [PATCH] media: staging: max96712: Constify static v4l2_subdev

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Date:   Sat, 27 Nov 2021 19:48:27 +0000
From:   Kieran Bingham <kieran.bingham@...asonboard.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Niklas Söderlund <niklas.soderlund@...natech.se>,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-media@...r.kernel.org, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: Re: [PATCH] media: staging: max96712: Constify static v4l2_subdev_ops

Hi Richard,

Quoting Rikard Falkeborn (2021-11-27 09:49:44)
> The only usage of max96712_subdev_ops is to pass its address to
> v4l2_i2c_subdev_init() which takes a pointer to const struct
> v4l2_subdev_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>

Yes, Good spot.

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

> ---
>  drivers/staging/media/max96712/max96712.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/media/max96712/max96712.c b/drivers/staging/media/max96712/max96712.c
> index 847e2ffd4f53..9bc72d9a858b 100644
> --- a/drivers/staging/media/max96712/max96712.c
> +++ b/drivers/staging/media/max96712/max96712.c
> @@ -250,7 +250,7 @@ static const struct v4l2_subdev_pad_ops max96712_pad_ops = {
>         .set_fmt = max96712_get_pad_format,
>  };
>  
> -static struct v4l2_subdev_ops max96712_subdev_ops = {
> +static const struct v4l2_subdev_ops max96712_subdev_ops = {
>         .video = &max96712_video_ops,
>         .pad = &max96712_pad_ops,
>  };
> -- 
> 2.34.1
>