On Thu, Apr 23, 2020 at 07:05:57PM +0200, Oscar Carter wrote:
> Use a formula to calculate the return value of the vnt_rf_addpower
> function instead of the "if" statement with literal values for every
> case.
>
> Signed-off-by: Oscar Carter <oscar.car...@gmx.com>
> ---
> Changelog v1 -> v2
> - Change the type of "base" variable from s32 to int as Dan Carpenter
> suggested.
> - Remove the "--" postoperator and replace with (base - 1) as Dan
> Carpenter suggested. Also, as this expression has a minus before the
> parenthesis, remove it an apply the minus operator changing the sign of
> "base" and literal "1".
>
> drivers/staging/vt6656/rf.c | 20 +++-----------------
> 1 file changed, 3 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/staging/vt6656/rf.c b/drivers/staging/vt6656/rf.c
> index 06fa8867cfa3..612fd4a59f8a 100644
> --- a/drivers/staging/vt6656/rf.c
> +++ b/drivers/staging/vt6656/rf.c
> @@ -538,28 +538,14 @@ int vnt_rf_write_embedded(struct vnt_private *priv, u32
> data)
>
> static u8 vnt_rf_addpower(struct vnt_private *priv)
> {
> + int base;
> 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 + 1) / -5) * 2 + 5 : 0;
I _hate_ ? : functions, just spell this out please as a real if()
statement.
thanks,
greg k-h
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