linux-kernel - Re: [PATCH] backlight: pwm_bl: make of_device

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Date:   Tue, 20 Jun 2017 11:52:30 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>, thierry.reding@...il.com,
        lee.jones@...aro.org, jingoohan1@...il.com,
        b.zolnierkie@...sung.com
Cc:     linux-pwm@...r.kernel.org, linux-fbdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] backlight: pwm_bl: make of_device_ids const

On 20/06/17 08:52, Arvind Yadav wrote:
> of_device_ids are not supposed to change at runtime. All functions
> working with of_device_ids provided by <linux/of.h> work with const
> of_device_ids. So mark the non-const structs as const.
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>

Acked-by: Daniel Thompson <daniel.thompson@...aro.org>


> ---
>   drivers/video/backlight/pwm_bl.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
> index 002f1ce..9bd1768 100644
> --- a/drivers/video/backlight/pwm_bl.c
> +++ b/drivers/video/backlight/pwm_bl.c
> @@ -178,7 +178,7 @@ static int pwm_backlight_parse_dt(struct device *dev,
>   	return 0;
>   }
>   
> -static struct of_device_id pwm_backlight_of_match[] = {
> +static const struct of_device_id pwm_backlight_of_match[] = {
>   	{ .compatible = "pwm-backlight" },
>   	{ }
>   };
>