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Re: [PATCH] wifi: ath11k: do not process consecutive RDDM event

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On 1/10/2024 11:14 PM, Baochen Qiang 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.
> 
> [ 1502.115876] ath11k_pci 0000:04:00.0: boot notify status reason MHI_CB_EE_RDDM
> [ 1502.115884] ath11k_pci 0000:04:00.0: firmware crashed: MHI_CB_EE_RDDM
> [ 1502.224041] ath11k_pci 0000:04:00.0: boot notify status reason MHI_CB_EE_RDDM
> [ 1502.224050] ath11k_pci 0000:04:00.0: firmware crashed: 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 one is
> also the same, we treat it as duplicate and ignore it, because normally
> we should receive a MHI_CB_EE_MISSION_MODE event between them.
> 
> Tested-on: WCN6855 hw2.1 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
> 
> Signed-off-by: Baochen Qiang <quic_bqiang@xxxxxxxxxxx>
Acked-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>





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