[PATCH 1/3] iwlwifi: mvm: fix accessing fw_id_to_mac_id

[Luca Coelho]

From: Sara Sharon <sara.sha...@intel.com>

Access should be by rcu_dereference. Issue was found by sparse.

Fixes: 65e254821cee ("iwlwifi: mvm: use firmware station PM notification for 
AP_LINK_PS")
Signed-off-by: Sara Sharon <sara.sha...@intel.com>
Signed-off-by: Luca Coelho <luciano.coe...@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c 
b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
index 6927caecd48e..486dcceed17a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
@@ -2401,7 +2401,7 @@ void iwl_mvm_sta_pm_notif(struct iwl_mvm *mvm, struct 
iwl_rx_cmd_buffer *rxb)
                return;
 
        rcu_read_lock();
-       sta = mvm->fw_id_to_mac_id[notif->sta_id];
+       sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
        if (WARN_ON(IS_ERR_OR_NULL(sta))) {
                rcu_read_unlock();
                return;
-- 
2.11.0