[PATCH ath-next v4 2/9] wifi: ath12k: add reference counting for core attachment to hardware group

[Vasanthakumar Thiagarajan]

On 4/8/2025 11:36 AM, Aditya Kumar Singh wrote:
> Currently, driver does not manage reference counting for attaching and
> detaching cores to/from hardware groups. This can lead to issues when
> multiple cores are involved. Or with same core, attach/detach is called
> multiple times back to back.
> 
> Fix this issue by using reference counting.
> 
> With that, it is now ensured that the core is properly attached or detached
> from the hardware group and even back to back calls will not alter the
> count.
> 
> Additionally, add some debug logs during the attachment and detachment
> events for better debugging and tracking.
> 
> 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>