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

This can happen when we shut down suddenly an interface.

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 39ead8c..db3efbb 100644 (file)
--- a/drivers/net/wireless/iwlwifi/pcie/tx.c
+++ b/drivers/net/wireless/iwlwifi/pcie/tx.c
@@ -480,11 +480,9 @@ 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;
        u32 stts_addr = trans_pcie->scd_base_addr +
                        SCD_TX_STTS_QUEUE_OFFSET(txq_id);
        static const u32 zero_val[4] = {};
-       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);
@@ -493,12 +491,6 @@ void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int txq_id)
 
        iwl_txq_set_inactive(trans, txq_id);
 
-       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_write_targ_mem_dwords(trans, stts_addr,
                                   zero_val, ARRAY_SIZE(zero_val));