Re: [PATCH v2] ssb: Fix division by zero issue in ssb_calc_clock_rate

From: Kalle Valo
Date: Thu Sep 07 2023 - 12:26:34 EST


Rand Deeb <rand.sec96@xxxxxxxxx> wrote:

> In ssb_calc_clock_rate(), there is a potential issue where the value of
> m1 could be zero due to initialization using clkfactor_f6_resolv(). This
> situation raised concerns about the possibility of a division by zero
> error.
>
> We fixed it by following the suggestions provided by Larry Finger
> <Larry.Finger@xxxxxxxxxxxx> and Michael Büsch <m@xxxxxxx>. The fix
> involves returning a value of 1 instead of 0 in clkfactor_f6_resolv().
> This modification ensures the proper functioning of the code and
> eliminates the risk of division by zero errors.
>
> Signed-off-by: Rand Deeb <rand.sec96@xxxxxxxxx>
> Acked-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
> Acked-by: Michael Büsch <m@xxxxxxx>

Patch applied to wireless-next.git, thanks.

e0b5127fa134 ssb: Fix division by zero issue in ssb_calc_clock_rate

--
https://patchwork.kernel.org/project/linux-wireless/patch/20230904232346.34991-1-rand.sec96@xxxxxxxxx/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches