[PATCH 2/3] wifi: ath12k: Refactor hardware recovery synchronous

[Jeff Johnson]

On 1/29/2024 10:08 PM, Karthikeyan Periyasamy wrote:
> Currently, in multi wiphy models, radio/link level synchronization is
> sufficient for MAC hardware (ieee80211_hw) reconfigure/recovery procedures
> since each radio/link is exposed as a MAC hardware (ieee80211_hw). However,
> in single wiphy models, multiple radio/links is exposed as a MAC hardware
> (ieee80211_hw) through the driver hardware abstraction (ath12k_hw) layer.
> In such scenario, we need synchronization between the reconfigure/recovery
> callback operations (i.e., ath12k_core_post_reconfigure_recovery(),
> ieee80211_ops->start(), ieee80211_ops->reconfig_complete(),
> ieee80211_ops->stop()) at the driver hardware abstraction (ath12k_hw) layer
> instead of radio/link (ath12k) layer. Therefore, introduce a new mutex in
> the ath12k_hw layer. This approach ensures compatibility of the hardware
> recovery procedure with both multi wiphy models and future single wiphy
> models.
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> 
> Signed-off-by: Karthikeyan Periyasamy <quic_periyasa at quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>