Re: [PATCH] ASoC: uniphier: make arrays mul and div static const, makes object smaller

[Masami Hiramatsu]

On Wed, 18 Aug 2021 16:17:46 +0100
Colin King <colin.king@xxxxxxxxxxxxx> wrote:

> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> 
> Don't populate the arrays mul and div on the stack but instead make them
> static const. Makes the object code smaller by 4 bytes.
> 
> Before:
>    text    data     bss     dec     hex filename
>   16226    4984      64   21274    531a ./sound/soc/uniphier/aio-cpu.o
> 
> After:
>    text    data     bss     dec     hex filename
>   16062    5144      64   21270    5316 ./sound/soc/uniphier/aio-cpu.o
> 
> (gcc version 10.2.0)

This looks good to me.

Acked-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>

Thank you,

> 
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> ---
>  sound/soc/uniphier/aio-cpu.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/soc/uniphier/aio-cpu.c b/sound/soc/uniphier/aio-cpu.c
> index cf9814130067..4e8d5f7532ba 100644
> --- a/sound/soc/uniphier/aio-cpu.c
> +++ b/sound/soc/uniphier/aio-cpu.c
> @@ -128,8 +128,8 @@ static const struct uniphier_aio_spec *find_spec(struct uniphier_aio *aio,
>  static int find_divider(struct uniphier_aio *aio, int pll_id, unsigned int freq)
>  {
>  	struct uniphier_aio_pll *pll;
> -	int mul[] = { 1, 1, 1, 2, };
> -	int div[] = { 2, 3, 1, 3, };
> +	static const int mul[] = { 1, 1, 1, 2, };
> +	static const int div[] = { 2, 3, 1, 3, };
>  	int i;
>  
>  	if (!is_valid_pll(aio->chip, pll_id))
> -- 
> 2.32.0
> 


-- 
Masami Hiramatsu <mhiramat@xxxxxxxxxx>