Commit 309c4848 authored Oct 24, 2017 by Luca Coelho

iwlwifi: mvm: hold mutex when flushing in iwl_mvm_flush_no_vif()



The iwl_mvm_flush_tx_path() function sends a synchronous command to
the firmware.  When doing that, we must hold the mutex.  The
iwl_mvm_flush_no_vif() function was mistakenly not holding the mutex.
Fix it.

Fixes: 6110d9e5 ("iwlwifi: mvm: Flush non STA TX queues")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

parent 06195639

drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -4005,11 +4005,14 @@ static void iwl_mvm_flush_no_vif(struct iwl_mvm *mvm, u32 queues, bool drop)
		int i;

		if (!iwl_mvm_has_new_tx_api(mvm)) {
		if (drop)
		if (drop) {
		mutex_lock(&mvm->mutex);
		iwl_mvm_flush_tx_path(mvm,
		iwl_mvm_flushable_queues(mvm) & queues, 0);
		else
		mutex_unlock(&mvm->mutex);
		} else {
		iwl_trans_wait_tx_queues_empty(mvm->trans, queues);
		}
		return;
		}