[PATCH] wifi: ath12k: do not process consecutive RDDM event

[Kalle Valo]

Baochen Qiang <quic_bqiang at quicinc.com> wrote:

> Currently we do reset for each RDDM event from MHI, however there are
> cases, see below log, that we get two or more consecutive events, and
> it is pointless to do reset for the subsequent ones. What's more, it
> makes reset process more likely to fail.
> 
> [  103.289864] mhi mhi0: System error detected
> [  103.289871] ath12k_pci 0000:03:00.0: mhi notify status reason MHI_CB_EE_RDDM
> [  103.293144] mhi mhi0: System error detected
> [  103.293150] ath12k_pci 0000:03:00.0: mhi notify status reason MHI_CB_EE_RDDM
> 
> Add a check to avoid reset again and again. This is done by tracking previous
> MHI status: if we receive a new RDDM event while the previous event is
> also the same, we treat it as duplicate and ignore it, because normally
> we should at least receive a MHI_CB_EE_MISSION_MODE event between them.
> 
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> 
> Signed-off-by: Baochen Qiang <quic_bqiang at quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>

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

8233d2716570 wifi: ath12k: do not process consecutive RDDM event

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20240529015357.9846-1-quic_bqiang@quicinc.com/

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