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wifi: iwlwifi: mvm: take the mutex before running link selection

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iwl_mvm_select_links is called by the link selection worker and it
requires the mutex.
Take it in the link selection worker.
This logic used to run from iwl_mvm_rx_umac_scan_complete_notif which
had the mvm->mutex held. This was changed to run in a worker holding the
wiphy mutex, but we also need the mvm->mutex.

Fixes: 2e194efa38 ("wifi: iwlwifi: mvm: Fix race in scan completion")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20240825191257.0cacecd5db1e.Iaca38a078592b69bdd06549daf63408ccf1810e4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Emmanuel Grumbach 2024-08-25 19:17:07 +03:00 committed by Johannes Berg
parent 916a5d9c53
commit cd6f46c2fd
1 changed files with 2 additions and 0 deletions
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2
drivers/net/wireless/intel/iwlwifi/mvm/ops.c
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@ -1198,10 +1198,12 @@ static void iwl_mvm_trig_link_selection(struct wiphy *wiphy,
struct iwl_mvm *mvm =
container_of(wk, struct iwl_mvm, trig_link_selection_wk);
mutex_lock(&mvm->mutex);
ieee80211_iterate_active_interfaces(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_find_link_selection_vif,
NULL);
mutex_unlock(&mvm->mutex);
}
static struct iwl_op_mode *