linux-kernel - Re: [PATCH v2 1/9] wifi: wfx: fix power

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Date:   Wed, 04 Oct 2023 13:20:12 +0300
From:   Kalle Valo <kvalo@...nel.org>
To:     Jérôme Pouiller <jerome.pouiller@...abs.com>
Cc:     linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/9] wifi: wfx: fix power_save setting when AP is
 stopped

Jérôme Pouiller <jerome.pouiller@...abs.com> writes:

> The WF200 allow to start two network interfaces (one AP, one station) on
> two different channels. Since magic does not exist, it only works if the
> station interface enables power save.
>
> Thus, the driver detects this case and enforce power save as necessary.
>
> This patch fixes the case where the AP interface is stopped and it is no
> more necessary to enforce power saving on the station interface.
>
> Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
> ---
>  drivers/net/wireless/silabs/wfx/sta.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/net/wireless/silabs/wfx/sta.c b/drivers/net/wireless/silabs/wfx/sta.c
> index 626dfb4b7a55d..9c0a11c277e97 100644
> --- a/drivers/net/wireless/silabs/wfx/sta.c
> +++ b/drivers/net/wireless/silabs/wfx/sta.c
> @@ -402,7 +402,12 @@ void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
>  		 struct ieee80211_bss_conf *link_conf)
>  {
>  	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
> +	struct wfx_dev *wdev = wvif->wdev;
>  
> +	wvif =  NULL;
> +	while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
> +		wfx_update_pm(wvif);

Isn't the assignment of wvif to NULL unnecessary as in the next line we
assign it to again?

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

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