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wifi: ath12k: fix MLO peer delete race

Browse source 
ath12k_peer_mlo_link_peers_delete() sends WMI peer_delete for every
link before waiting for any peer_unmap / peer_delete_resp event. The
shared per-radio completion ar->peer_delete_done could not
disambiguate which peer a response was for: every call to
ath12k_peer_delete_send() did
reinit_completion(&ar->peer_delete_done), so when an event for the
first link arrived between two sends it raised the count to 1 and
the second send promptly cleared it; the wait for the second link
then timed out with

    Timeout in receiving peer delete response

Replace the shared completion with a per-radio waiter list, with
each pending ath12k_peer_delete() caller queueing an
ath12k_peer_delete_wait carrying its (vdev_id, addr) and a private
struct completion. ath12k_peer_delete_resp_event() matches the
response against the list under ar->data_lock and signals the
matching waiter.

Also correct the endian conversion in ath12k_peer_delete_resp_event()
logging, and add the missing \n in some logging.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c7-00108-QCAHMTSWPL_V1.0_V2.0_SILICONZ_UPSTREAM-3

Fixes: 8e6f8bc286 ("wifi: ath12k: Add MLO station state change handling")
Signed-off-by: Baochen Qiang <baochen.qiang@oss.qualcomm.com>
Reviewed-by: Rameshkumar Sundaram <rameshkumar.sundaram@oss.qualcomm.com>
Link: https://patch.msgid.link/20260629-ath12k-mlo-peer-delete-race-v2-2-362b25590d19@oss.qualcomm.com
Signed-off-by: Jeff Johnson <jeff.johnson@oss.qualcomm.com>
This commit is contained in:
Baochen Qiang 2026-06-29 15:01:18 +08:00 • committed by Jeff Johnson
commit 01cc0f59aa
6 changed files with 131 additions and 38 deletions
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