From 96fb6f47db24a712d650b0a9b9074873f273fb0e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 14 Jun 2023 12:41:22 +0300 Subject: [PATCH] wifi: iwlwifi: pull from TXQs with softirqs disabled In mac80211, it's required that we pull from TXQs by calling ieee80211_tx_dequeue() only with softirqs disabled. However, in iwl_mvm_queue_state_change() we're often called with them enabled, e.g. from flush if anything was flushed, triggering a mac80211 warning. Fix that by disabling the softirqs across the TX call. Fixes: cfbc6c4c5b91 ("iwlwifi: mvm: support mac80211 TXQs model") Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230614123446.0feef7fa81db.I4dd62542d955b40dd8f0af34fa4accb9d0d17c7e@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 430642576f5d..cc04d7cad715 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -1740,8 +1740,11 @@ static void iwl_mvm_queue_state_change(struct iwl_op_mode *op_mode, else set_bit(IWL_MVM_TXQ_STATE_STOP_FULL, &mvmtxq->state); - if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) + if (start && mvmsta->sta_state != IEEE80211_STA_NOTEXIST) { + local_bh_disable(); iwl_mvm_mac_itxq_xmit(mvm->hw, txq); + local_bh_enable(); + } } out: