diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/queue/tx.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/queue/tx.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.c b/drivers/net/wireless/intel/iwlwifi/queue/tx.c index 726185d6fab8..d1c39c214f95 100644 --- a/drivers/net/wireless/intel/iwlwifi/queue/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.c @@ -1554,14 +1554,18 @@ void iwl_txq_reclaim(struct iwl_trans *trans, int txq_id, int ssn, struct sk_buff_head *skbs) { struct iwl_txq *txq = trans->txqs.txq[txq_id]; - int tfd_num = iwl_txq_get_cmd_index(txq, ssn); - int read_ptr = iwl_txq_get_cmd_index(txq, txq->read_ptr); - int last_to_free; + int tfd_num, read_ptr, last_to_free; /* This function is not meant to release cmd queue*/ if (WARN_ON(txq_id == trans->txqs.cmd.q_id)) return; + if (WARN_ON(!txq)) + return; + + tfd_num = iwl_txq_get_cmd_index(txq, ssn); + read_ptr = iwl_txq_get_cmd_index(txq, txq->read_ptr); + spin_lock_bh(&txq->lock); if (!test_bit(txq_id, trans->txqs.queue_used)) { |