Re: [PATCH v2 3/5] wifi: ath12k: Fix Pdev id in HTT stats request for WCN7850

[Kalle Valo <kvalo@kernel.org>]

Ramya Gnanasekar <quic_rgnanase@quicinc.com> writes:

> From: Lingbo Kong <quic_lingbok@quicinc.com>
>
> Pdev id from mac phy capabilities will be sent as a part of
> HTT stats request to firmware. This causes issue with single pdev
> devices where fimrware does not respond to the stats request
> sent from host.
>
> Single pdev devices firmware expects pdev id as 1 for 5GHz/6GHz
> phy and 2 for 2GHz band. Handle pdev id for single phy device
> while sending HTT stats request message to firmware.
>
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-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: Lingbo Kong <quic_lingbok@quicinc.com>
> Signed-off-by: Ramya Gnanasekar <quic_rgnanase@quicinc.com>

[...]

> @@ -1029,7 +1030,12 @@ ath12k_dp_tx_htt_h2t_ext_stats_req(struct ath12k *ar, u8 type,
>  	memset(cmd, 0, sizeof(*cmd));
>  	cmd->hdr.msg_type = HTT_H2T_MSG_TYPE_EXT_STATS_CFG;
>  
> -	cmd->hdr.pdev_mask = 1 << ar->pdev->pdev_id;
> +	if (ab->hw_params->single_pdev_only)
> +		pdev_id = ath12k_mac_get_target_pdev_id(ar);
> +	else
> +		pdev_id = ar->pdev->pdev_id;

Wouldn't it be cleaner to have the single_pdev_only check in
ath12k_mac_get_target_pdev_id()?

> +struct ath12k_vif *ath12k_mac_get_vif_up(struct ath12k_base *ab)
> +{
> +	struct ath12k *ar;
> +	struct ath12k_pdev *pdev;
> +	struct ath12k_vif *arvif;
> +	int i;
> +
> +	for (i = 0; i < ab->num_radios; i++) {
> +		pdev = &ab->pdevs[i];
> +		ar = pdev->ar;
> +		list_for_each_entry(arvif, &ar->arvifs, list) {
> +			if (arvif->is_up)
> +				return arvif;
> +		}
> +	}
> +
> +	return NULL;
> +}

I'm not seeing any protection here, is that on purpose?

> +u8 ath12k_mac_get_target_pdev_id(struct ath12k *ar)
> +{
> +	struct ath12k_vif *arvif;
> +
> +	arvif = ath12k_mac_get_vif_up(ar->ab);
> +
> +	if (arvif)
> +		return ath12k_mac_get_target_pdev_id_from_vif(arvif);
> +	else
> +		return ar->ab->fw_pdev[0].pdev_id;
> +}

No need to have else after return.

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