Re: [PATCH ath-next] wifi: ath12k: fix MLO 4-way handshake timeout on QCC2072

[Burke Cates]

On Sat, Aug 15, 2026 at 09:43:29AM +0800, Miaoqing Pan wrote:
> This is observed on QCC2072 where EAPOL M3 uses the MLD address,
>
>   deauthenticated (Reason: 15=4WAY_HANDSHAKE_TIMEOUT)

I hit this on an ASUS Zenbook A16 (UX3607OA, Snapdragon X2 Elite)
with the on-board QCC2072: Wi-Fi 7 MLO SSIDs (SAE, PMF required; one
6 GHz-only, one 2.4+5+6 GHz) failed with reason 15 whatever the
association link, with M3 dropped by mac80211. Non-MLO WPA2-PSK on
5 GHz was fine.

With this patch, applied as posted, both MLO SSIDs connect. I tested
on v7.3-rc5 and again on v7.3, each plus out-of-tree Glymur
platform/board patches; on v7.3 the tri-band SSID connected as MLO
(on its 6 GHz link) and rejoined MLO after s2idle resume. That tree
also carries your separate dp_peer fix (8b6b871332b5, "Fix failure to
create ath12k_dp_peer on MLO reconnect"). I haven't tried the rebase
onto ath/main that Jeff asked for.

Tested-on: QCC2072 hw1.0 PCI WLAN.COL.1.0.c2-00277-QCACOLSWPL_V1_TO_SILICONZ-1

Tested-by: Burke Cates <burke.cates@xxxxxxxxx> # ASUS Zenbook A16 (UX3607OA)

AI coding assistants helped run these tests and draft this reply; the
results are from the hardware runs.

Thanks,
Burke