iwlwifi: mvm: use atomic interface iteration to avoid deadlock
Using the non-atomic version creates a dependency between
mac80211's iflist_mtx and mvm->mutex. Use the atomic version
instead which doesn't take iflist_mtx but can't sleep, so
send the HCMD in ASYNC.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
index a6b05a0..64acc4a 100644
--- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c
+++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c
@@ -475,7 +475,7 @@
if (mvm->vif_count > 1) {
IWL_DEBUG_MAC80211(mvm,
"Disable power on existing interfaces\n");
- ieee80211_iterate_active_interfaces(
+ ieee80211_iterate_active_interfaces_atomic(
mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_pm_disable_iterator, mvm);