[PATCH ath-next v4 9/9] wifi: ath12k: reset MLO global memory during recovery

[Vasanthakumar Thiagarajan]

On 4/8/2025 11:36 AM, Aditya Kumar Singh wrote:
> When operating with multiple devices grouped together, the firmware stores
> data related to the state machine of each partner device in the MLO global
> memory region. If the firmware crashes, it updates the state to 'crashed'.
> During recovery, this memory is shared with the firmware again, and upon
> detecting the 'crashed' state, it reasserts. This leads to a loop of
> firmware asserts and it never recovers.
> 
> Hence to fix this issue,  once all devices in the group have been asserted
> and powered down, reset the MLO global memory region.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.3.1-00173-QCAHKSWPL_SILICONZ-1
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
> Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> 
> Signed-off-by: Aditya Kumar Singh <aditya.kumar.singh at oss.qualcomm.com>

Reviewed-by: Vasanthakumar Thiagarajan <vasanthakumar.thiagarajan at oss.qualcomm.com>