On Mon, Apr 13, 2020 at 04:02:09PM +0200, Oscar Carter wrote:
> diff --git a/drivers/staging/vt6656/rf.c b/drivers/staging/vt6656/rf.c
> index 4f9aba0f21b0..3b200d7290a5 100644
> --- a/drivers/staging/vt6656/rf.c
> +++ b/drivers/staging/vt6656/rf.c
> @@ -575,28 +575,14 @@ int vnt_rf_setpower(struct vnt_private *priv, u32 rate, u32 channel)
>
> static u8 vnt_rf_addpower(struct vnt_private *priv)
> {
> + s32 base;
Just use "int". s32 is for when signed 32 bit is specified in the
hardware. I realize that it's done in this file, but if all your
friends jumped off a bridge doesn't mean you should drink their kool-aid.
> s32 rssi = -priv->current_rssi;
>
> if (!rssi)
> return 7;
>
> - if (priv->rf_type == RF_VT3226D0) {
> - if (rssi < -70)
> - return 9;
> - else if (rssi < -65)
> - return 7;
> - else if (rssi < -60)
> - return 5;
> - } else {
> - if (rssi < -80)
> - return 9;
> - else if (rssi < -75)
> - return 7;
> - else if (rssi < -70)
> - return 5;
> - }
> -
> - return 0;
> + base = (priv->rf_type == RF_VT3226D0) ? -60 : -70;
> + return (rssi < base--) ? ((rssi - base) / -5) * 2 + 5 : 0;
^^^^^^
I quite hate this postop. It would have been cleaner to write it like:
return (rssi < base) ? ((rssi - (base - 1)) / -5) * 2 + 5 : 0
I'm sorry, I'm not clever enough to figure out the potential values of
"rssi". How did you work out this formula? It feels like it came from
a standard or something? Do we not have a function already which
implements the standard?
regards,
dan carpenter
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