Re: [PATCH 2/3][V2] rtlwifi: rtl8192de: make arrays static const, makes object smaller

From: Joe Perches
Date: Tue Aug 03 2021 - 11:09:38 EST


On Tue, 2021-08-03 at 15:49 +0100, Colin King wrote:
> Don't populate arrays the stack but instead make them static const. Replace
> array channel_info with channel_all since it contains the same data as
> channel_all. Makes object code smaller by 961 bytes.
[]
> diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c
[]
> @@ -160,6 +160,15 @@ static u32 targetchnl_2g[TARGET_CHNL_NUM_2G] = {
>   25711, 25658, 25606, 25554, 25502, 25451, 25328
>  };
>
> +static const u8 channel_all[59] = {

I don't believe there is a significant value in sizing the array
as 59 instead of letting the compiler count the elements.

> + 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
> + 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58,
> + 60, 62, 64, 100, 102, 104, 106, 108, 110, 112,
> + 114, 116, 118, 120, 122, 124, 126, 128, 130,
> + 132, 134, 136, 138, 140, 149, 151, 153, 155,
> + 157, 159, 161, 163, 165
> +};