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Subject: Re: [PATCH] wifi: ath12k: fix recovery fail while firmware crash when
 doing channel switch
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <20230905105229.10090-1-quic_wgong@quicinc.com>
References: <20230905105229.10090-1-quic_wgong@quicinc.com>
To:     Wen Gong <quic_wgong@quicinc.com>
Cc:     <ath12k@lists.infradead.org>, <linux-wireless@vger.kernel.org>,
        <quic_wgong@quicinc.com>
User-Agent: pwcli/0.1.1-git (https://github.com/kvalo/pwcli/) Python/3.11.2
Message-ID: <169591327779.3019228.18229314827081753794.kvalo@kernel.org>
Date:   Thu, 28 Sep 2023 15:01:19 +0000 (UTC)
Precedence: bulk

Wen Gong <quic_wgong@quicinc.com> wrote:

> When firmware crashed while channel switch running, recovery starts in
> ath12k. Then ieee80211_sta_connection_lost() will be called by function
> ieee80211_restart_work() in mac80211. And then many WMI command timeout
> because firmware is crashed. Each WMI command cost 3 seconds, then the
> total time will be large and leads recovery fail.
> 
> Hence change to set value ATH12K_FLAG_CRASH_FLUSH early and then
> ath12k_wmi_cmd_send() will not wait 3 seconds, then recovery will be
> started quickly and success.
> 
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4
> 
> Signed-off-by: Wen Gong <quic_wgong@quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

ecbb987b0a96 wifi: ath12k: fix recovery fail while firmware crash when doing channel switch

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20230905105229.10090-1-quic_wgong@quicinc.com/

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