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Subject: Re: [PATCH] ath11k: Handle failure in qmi firmware ready
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <1645079195-13564-1-git-send-email-quic_seevalam@quicinc.com>
References: <1645079195-13564-1-git-send-email-quic_seevalam@quicinc.com>
To:     Seevalamuthu Mariappan <quic_seevalam@quicinc.com>
Cc:     <ath11k@lists.infradead.org>, <linux-wireless@vger.kernel.org>,
        Seevalamuthu Mariappan <quic_seevalam@quicinc.com>
User-Agent: pwcli/0.1.0-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <164543932220.26423.15078831707395923545.kvalo@kernel.org>
Date:   Mon, 21 Feb 2022 10:28:43 +0000 (UTC)
Precedence: bulk

Seevalamuthu Mariappan <quic_seevalam@quicinc.com> wrote:

> In some scenarios like firmware crashes during init time
> and hardware gets restarted after qmi firmware ready event.
> During restart, ath11k_core_qmi_firmware_ready() returns timeout.
> But, this failure is not handled and ATH11K_FLAG_REGISTERED is set.
> 
> When hardware restart completed, firmware sends firmware ready event
> again. Since ATH11K_FLAG_REGISTERED is already set, ath11k handles
> this as core restart. Inits are not done because of previous timeout.
> But ath11k_core_restart does deinit's which causes NULL pointer crash.
> 
> Fix this by handling failure from ath11k_core_qmi_firmware_ready().
> 
> Tested-on: QCN9074 hw1.0 PCI WLAN.HK.2.7.0.1-00881-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Seevalamuthu Mariappan <quic_seevalam@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

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

a19c0e104db9 ath11k: Handle failure in qmi firmware ready

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/1645079195-13564-1-git-send-email-quic_seevalam@quicinc.com/

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