[PATCH v2 2/2] ath10k: refactor radar detection code

[Kalle Valo]

Michal Kazior <michal.kazior at tieto.com> writes:

> If 20MHz CAC completed successfully then
> subsequent CAC with wider bandwidth (40Mhz, 80Mhz)
> with identical control frequency did not start
> monitor vdev making it impossible to detect any
> radar pulses during intended CAC.
>
> It also was incorrect to assume ath10k_config() will
> be called after CAC is finished. Theoretically for
> non-HT channels nothing changes between CAC and
> start_ap() (albeit in practice this can be
> different). The incorrect assumption led to CAC
> not being stopped on non-HT chandefs leading to
> all Rx being drooped making it impossible for
> clients to associate.
>
> While at it clean up the code a bit.
>
> Signed-off-by: Michal Kazior <michal.kazior at tieto.com>

[...]

> @@ -858,6 +830,11 @@ static int ath10k_vdev_stop(struct ath10k_vif *arvif)
>  		return ret;
>  	}
>  
> +	if (!WARN_ON(ar->num_started_vdevs == 0)) {

Even though this is correct, I think it's still a bit evil. For example,
I missed '!' the first time I looked at this. Even this is a line
longer, I think it would be easier to read:

WARN_ON(ar->num_started_vdevs == 0);

if (ar->num_started_vdevs != 0) {
        ...
}

-- 
Kalle Valo