Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: Re: [PATCH] ath11k: Register shutdown handler for WCN6750
From:   Kalle Valo <kvalo@kernel.org>
In-Reply-To: <20220720134710.15523-1-quic_mpubbise@quicinc.com>
References: <20220720134710.15523-1-quic_mpubbise@quicinc.com>
To:     Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
Cc:     <ath11k@lists.infradead.org>, <linux-wireless@vger.kernel.org>,
        Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
User-Agent: pwcli/0.1.1-git (https://github.com/kvalo/pwcli/) Python/3.7.3
Message-ID: <166204857927.15293.15300946292599236513.kvalo@kernel.org>
Date:   Thu,  1 Sep 2022 16:09:55 +0000 (UTC)
Precedence: bulk

Manikanta Pubbisetty <quic_mpubbise@quicinc.com> wrote:

> When the system shuts down, SMMU driver will be stopped and
> will not assist in IOVA translations. SMMU driver expects all
> of its consumers to shutdown before shutting down itself.
> WCN6750 being one of the consumer device should not perform any
> DMA operations after the SMMU has shutdown which will otherwise
> result in SMMU faults.
> 
> SMMU driver will call the shutdown() callback of all its
> consumer devices and the consumers shall stop further DMA
> activity after the invocation of their respective shutdown()
> callbacks.
> 
> Register the shutdown() callback to the platform core for WCN6750.
> Change will not impact other AHB ath11k devices.
> 
> Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1
> 
> Signed-off-by: Manikanta Pubbisetty <quic_mpubbise@quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>

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

ac41c2b642b1 wifi: ath11k: Register shutdown handler for WCN6750

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20220720134710.15523-1-quic_mpubbise@quicinc.com/

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