Sven Eckelmann <sven@xxxxxxxxxxxxx> wrote:
> The ath11k code will try to insert wheather rader related limits when the
> DFS region is set to ETSI. For this reason, it will add two more entries in
> the array of reg_rules. But the 2.4.0.1 firmware is prefiltering the list
> of reg rules it returns for 2.4GHz PHYs. They will then not contain the
> list of 5GHz rules and thus no wheather radar band rules were inserted by
> this code.
>
> But the code didn't fix the n_reg_rules for this regulatory domain and PHY
> when this happened. This resulted in a rejection by is_valid_rd because it
> found rules which start and end at 0khz. This resulted in a splat like:
>
> Invalid regulatory domain detected
> ------------[ cut here ]------------
> WARNING: at backports-20200628-4.4.60-9a94b73e75/net/wireless/reg.c:3721
> [...]
> ath11k c000000.wifi1: failed to perform regd update : -22
>
> The number of rules must therefore be saved after they were converted from
> the ath11k format to the ieee80211_regdomain format and not before.
>
> Tested with IPQ8074 WLAN.HK.2.4.0.1.r1-00019-QCAHKSWPL_SILICONZ-1
>
> Fixes: d5c65159f289 ("ath11k: driver for Qualcomm IEEE 802.11ax devices")
> Signed-off-by: Sven Eckelmann <sven@xxxxxxxxxxxxx>
> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
6189be7d145c ath11k: Fix number of rules in filtered ETSI regdomain
--
https://patchwork.kernel.org/project/linux-wireless/patch/20201030101940.2387952-1-sven@xxxxxxxxxxxxx/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
