From: Johannes Berg johannes.berg@intel.com
[ Upstream commit 6569e7d36773956298ec1d5f4e6a2487913d2752 ]
This code clearly never could have worked, since it locks while already locked. Add an unlocked __iwl_mvm_mac_set_key() variant that doesn't do locking to fix that.
Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 39 ++++++++++++------- 1 file changed, 26 insertions(+), 13 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 964c7baabede3..edffae3741e00 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -207,11 +207,11 @@ static const struct cfg80211_pmsr_capabilities iwl_mvm_pmsr_capa = { }, };
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, - enum set_key_cmd cmd, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta, - struct ieee80211_key_conf *key); +static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, + enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key);
void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type) { @@ -2725,7 +2725,7 @@ static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
mvmvif->ap_early_keys[i] = NULL;
- ret = iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); + ret = __iwl_mvm_mac_set_key(hw, SET_KEY, vif, NULL, key); if (ret) goto out_quota_failed; } @@ -3493,11 +3493,11 @@ static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw, return ret; }
-static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, - enum set_key_cmd cmd, - struct ieee80211_vif *vif, - struct ieee80211_sta *sta, - struct ieee80211_key_conf *key) +static int __iwl_mvm_mac_set_key(struct ieee80211_hw *hw, + enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); @@ -3552,8 +3552,6 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, return -EOPNOTSUPP; }
- mutex_lock(&mvm->mutex); - switch (cmd) { case SET_KEY: if ((vif->type == NL80211_IFTYPE_ADHOC || @@ -3699,7 +3697,22 @@ static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, ret = -EINVAL; }
+ return ret; +} + +static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw, + enum set_key_cmd cmd, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + int ret; + + mutex_lock(&mvm->mutex); + ret = __iwl_mvm_mac_set_key(hw, cmd, vif, sta, key); mutex_unlock(&mvm->mutex); + return ret; }