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mac80211: sta_info: Add lockdep condition for RCU list usage 

[ Upstream commit 8ca47eb9f9 ]

The function sta_info_get_by_idx() uses RCU list primitive.
It is called with  local->sta_mtx held from mac80211/cfg.c.
Add lockdep expression to avoid any false positive RCU list warnings.

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Link: https://lore.kernel.org/r/20200409082906.27427-1-madhuparnabhowmik10@gmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Madhuparna Bhowmik 2020-04-09 13:59:06 +05:30 committed by Greg Kroah-Hartman
parent 07fea3d3ef
commit fd2c9e6052
1 changed files with 2 additions and 1 deletions
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3
net/mac80211/sta_info.c
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@ -217,7 +217,8 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta;
int i = 0;
list_for_each_entry_rcu(sta, &local->sta_list, list) {
list_for_each_entry_rcu(sta, &local->sta_list, list,
lockdep_is_held(&local->sta_mtx)) {
if (sdata != sta->sdata)
continue;
if (i < idx) {