linux-kernel - Re: [PATCH][next] media: bt8xx: make read-only arrays static

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Message-ID: <ZJr0WvhFfCILwbeP@tom-HP-ZBook-Fury-15-G7-Mobile-Workstation>
Date:   Tue, 27 Jun 2023 16:38:18 +0200
From:   Tommaso Merciai <tomm.merciai@...il.com>
To:     Colin Ian King <colin.i.king@...il.com>
Cc:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] media: bt8xx: make read-only arrays static

Hi Colin,

On Tue, Jun 27, 2023 at 02:48:51PM +0100, Colin Ian King wrote:
> Don't populate the arrays on the stack, instead make them static const.
> Also add spaces between values to clean up checkpatch style warnings.
> 
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> ---
>  drivers/media/pci/bt8xx/dvb-bt8xx.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/media/pci/bt8xx/dvb-bt8xx.c b/drivers/media/pci/bt8xx/dvb-bt8xx.c
> index 4cb890b949c3..df83b59a618d 100644
> --- a/drivers/media/pci/bt8xx/dvb-bt8xx.c
> +++ b/drivers/media/pci/bt8xx/dvb-bt8xx.c
> @@ -190,11 +190,15 @@ static int cx24108_tuner_set_params(struct dvb_frontend *fe)
>  	u32 freq = c->frequency;
>  	int i, a, n, pump;
>  	u32 band, pll;
> -	u32 osci[]={950000,1019000,1075000,1178000,1296000,1432000,
> -		1576000,1718000,1856000,2036000,2150000};
> -	u32 bandsel[]={0,0x00020000,0x00040000,0x00100800,0x00101000,
> +	static const u32 osci[] = {
> +		950000, 1019000, 1075000, 1178000, 1296000, 1432000,
> +		1576000, 1718000, 1856000, 2036000, 2150000
> +	};
> +	static const u32 bandsel[] = {
> +		0, 0x00020000, 0x00040000, 0x00100800, 0x00101000,
>  		0x00102000,0x00104000,0x00108000,0x00110000,

Are you not missing space also here?

> -		0x00120000,0x00140000};
> +		0x00120000, 0x00140000
> +	};
>  
>  	#define XTAL 1011100 /* Hz, really 1.0111 MHz and a /10 prescaler */
>  	dprintk("cx24108 debug: entering SetTunerFreq, freq=%d\n", freq);
> -- 
> 2.39.2
> 

Regards,
Tommaso