iwlwifi: pcie: don't reset the TX queue counter

A few NICs can get into trouble if we reset the TX queue counters in certain very rare situation. To be on the safe side, simply avoid to reset the TX queue counter. This is relevant for non-AMPDU queues only since on AMPDU we have no choice - we must start the TX queue at the right index. Signed-off-by: Emmanuel Grumbach <[email protected]> Signed-off-by: Johannes Berg <[email protected]>
marineam · Oct 2, 2013 · f477252 · f477252
1 parent 01ea748
commit f477252
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c
@@ -1102,6 +1102,8 @@ void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo,
 		 * non-AGG queue.
 		 */
 		iwl_clear_bits_prph(trans, SCD_AGGR_SEL, BIT(txq_id));
+
+		ssn = trans_pcie->txq[txq_id].q.read_ptr;
 	}
 
 	/* Place first TFD at index corresponding to start sequence number.