[PATCH] wifi: ath12k: Fix issues in channel list update

[Kalle Valo]

Sriram R <quic_srirrama at quicinc.com> wrote:

> Currently, the logic used to select the 6 GHz band is incorrect,
> which may cause 6 GHz supported channels to not be updated properly.
> This is because the 6 GHz Max frequency supported by the driver is
> being compared to the Max frequency supported on the board. If in
> some cases, the 6 GHz Max frequency supported on the board is less
> than the defined 6 GHz Max frequency, all 6 GHz channels are disabled.
> To address this, compare the max frequency supported by the board to
> the defined 6 GHz Minimum frequency by the driver.
> 
> Similarly, when a dual mac card supports both 6 GHz and 5 GHz radios,
> if the 5 GHz radio gets enumerated first before 6 GHz, the checks in
> ath12k_mac_setup_channels_rates() can cause the 5 GHz channels which
> were enabled earlier to get disabled when the 6 GHz channel list is
> updated. This is because the Min 6 GHz frequency defined in the driver
> is 5945 MHz, which should be 5925 MHz since channel 2 is not considered
> currently, but the firmware can pass 5925 MHz as the minimum.
> Hence, update the Min frequency supported by the driver to 5925 MHz.
> 
> In addition, ensure that the channel list update to firmware updates
> only the channels that the current radio (ar) supports rather than
> considering the wiphy support. This would be required when multiple pdevs
> are supported in a wiphy and they support different ranges of frequencies
> or bands as in single wiphy support.
> 
> Fixes: d889913205cf ("wifi: ath12k: driver for Qualcomm Wi-Fi 7 devices")
> 
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.0.1-00029-QCAHKSWPL_SILICONZ-1
> Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.1.1-00188-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: Sriram R <quic_srirrama at quicinc.com>
> Acked-by: Jeff Johnson <quic_jjohnson at quicinc.com>
> Signed-off-by: Kalle Valo <quic_kvalo at quicinc.com>

Patch applied to ath-next branch of ath.git, thanks.

67a48d937fac wifi: ath12k: Fix issues in channel list update

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20240117062628.8260-1-quic_srirrama@quicinc.com/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches