Re: [PATCH] rtlwifi/*/dm.c: Use const in swing_table declarations

[Pkshih <pkshih@realtek.com>]

On Sun, 2020-06-28 at 19:51 -0700, joe@perches.com wrote:
> On 2020-06-28 19:09, Pkshih wrote:
> > On Sun, 2020-06-28 at 03:17 -0700, Joe Perches wrote:
> > 
> > Use 'rtlwifi:' as subject title prefix is enough, likes
> >   rtlwifi: Use const in swing_table declarations
> 
> We disagree.
> 
> I like knowing what content is changed via patch subject lines
> as there are 3 rtlwifi drivers being changed by this one patch.

If 3 drivers are needed to be listed, I'd use below subject

"rtlwifi: Use const in rtl8188ee/rtl8723be/rtl8821ae swing_table declarations"

> 
> But your choice, you can change it if you choose.
> 
> >> Reduce data usage about 1KB by using const.
> []
> > Please remove below type casting: 
> > 
> > @@ -1872,10 +1872,10 @@ static void 
> > rtl8821ae_get_delta_swing_table(struct
> > ieee80211_hw *hw,
> >                 *up_b = rtl8821ae_delta_swing_table_idx_5gb_p[2];
> >                 *down_b = rtl8821ae_delta_swing_table_idx_5gb_n[2];
> >         } else {
> > -           *up_a = (u8 *)rtl8818e_delta_swing_table_idx_24gb_p;
> > -           *down_a = (u8 *)rtl8818e_delta_swing_table_idx_24gb_n;
> > -           *up_b = (u8 *)rtl8818e_delta_swing_table_idx_24gb_p;
> > -           *down_b = (u8 *)rtl8818e_delta_swing_table_idx_24gb_n;
> > +               *up_a = rtl8818e_delta_swing_table_idx_24gb_p;
> > +               *down_a = rtl8818e_delta_swing_table_idx_24gb_n;
> > +               *up_b = rtl8818e_delta_swing_table_idx_24gb_p;
> > +               *down_b = rtl8818e_delta_swing_table_idx_24gb_n;
> 
> The compiler is quiet about this so I believe this to be
> an unrelated change and whitespace correction.

I know compiler doesn't warn this, but it looks wired to cast 'const u8 *'
to 'u8 *' to 'const u8 *'.


> 
> Of course you could modify it if you choose.
> 
> btw: There's an unnecessary return at the 2nd instance
>       of this cast removal too.

It seems like to copy from rtl8812ae_get_delta_swing_table(), so
I can remove it by another patch.

> 
> cheers, Joe
> 
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