iwlwifi: don't WARN when a non empty queue is disabled

This can happen when we shut down suddenly an interface.

Cc: stable@vger.kernel.org
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/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c
index 105e3af3c621b0b9e335fbe42d1ea1e444bfa579..79a4ddc002d3dac1ce4aa9182bd2a2a0cf76630b 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/tx.c
@@ -480,20 +480,12 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo,
 void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id)
 {
        struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
-       u16 rd_ptr, wr_ptr;
-       int n_bd = trans_pcie->txq[txq_id].q.n_bd;
 
        if (!test_and_clear_bit(txq_id, trans_pcie->queue_used)) {
                WARN_ONCE(1, "queue %d not used", txq_id);
                return;
        }
 
-       rd_ptr = iwl_read_prph(trans, SCD_QUEUE_RDPTR(txq_id)) & (n_bd - 1);
-       wr_ptr = iwl_read_prph(trans, SCD_QUEUE_WRPTR(txq_id));
-
-       WARN_ONCE(rd_ptr != wr_ptr, "queue %d isn't empty: [%d,%d]",
-                 txq_id, rd_ptr, wr_ptr);
-
        iwl_txq_set_inactive(trans, txq_id);
        IWL_DEBUG_TX_QUEUES(trans, "Deactivate queue %d\n", txq_id);
 }