[PATCH ath-next] wifi: ath12k: Block radio bring-up in FTM mode

[Vasanthakumar Thiagarajan]

On 6/30/2025 8:45 AM, Aaradhana Sahu wrote:
> Ensure that all radios remain down when the driver operates in Factory
> Test Mode (FTM). Reject any userspace attempts to bring up an
> interface in this mode.
> 
> Currently, the driver allows userspace to bring up the interface even
> though it operates in FTM mode, which violates FTM constraints and
> leads to FTM command failures.
> 
> Hence, block the radio start when the driver is in FTM mode. Also,
> remove ath12k_ftm_mode check from ath12k_drain_tx() because FTM mode
> check is already handled in the caller function
> (ath12k_mac_op_start()).
> 
> 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
> 
> Fixes: 3bc374cbc49e ("wifi: ath12k: add factory test mode support")
> Signed-off-by: Aaradhana Sahu <aaradhana.sahu at oss.qualcomm.com>

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