[PATCH] ath11k: Register shutdown handler for WCN6750

[Kalle Valo]

Manikanta Pubbisetty <quic_mpubbise at 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 at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at 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