iwlwifi: renaming last_used and first_empty

This patch renames queue pointers to write_ptr and read_ptr
instead of  first_empty and last_used. This is closer to technical
terminology we everyday use

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 13 insertions, 13 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 7ff8f72d482d..d7e181f9ce80 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -1749,14 +1749,14 @@ void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
 }
 
 /**
- * iwl_hw_txq_free_tfd -  Free one TFD, those at index [txq->q.last_used]
+ * iwl_hw_txq_free_tfd -  Free one TFD, those at index [txq->q.read_ptr]
  *
  * Does NOT advance any indexes
  */
 int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 {
         struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0];
-        struct iwl_tfd_frame *bd = &bd_tmp[txq->q.last_used];
+        struct iwl_tfd_frame *bd = &bd_tmp[txq->q.read_ptr];
         struct pci_dev *dev = priv->pci_dev;
         int i;
         int counter = 0;
@@ -1796,11 +1796,11 @@ int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl_tx_queue *txq)
                                          IWL_GET_BITS(bd->pa[index], tb1_len),
                                          PCI_DMA_TODEVICE);
 
-                if (txq->txb[txq->q.last_used].skb[i]) {
-                        struct sk_buff *skb = txq->txb[txq->q.last_used].skb[i];
+                if (txq->txb[txq->q.read_ptr].skb[i]) {
+                        struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i];
 
                         dev_kfree_skb(skb);
-                        txq->txb[txq->q.last_used].skb[i] = NULL;
+                        txq->txb[txq->q.read_ptr].skb[i] = NULL;
                 }
         }
         return 0;
@@ -2776,11 +2776,11 @@ int iwl4965_tx_queue_update_wr_ptr(struct iwl_priv *priv,
         len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
 
         IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
-                       tfd_offset[txq->q.first_empty], byte_cnt, len);
+                       tfd_offset[txq->q.write_ptr], byte_cnt, len);
 
-        if (txq->q.first_empty < IWL4965_MAX_WIN_SIZE)
+        if (txq->q.write_ptr < IWL4965_MAX_WIN_SIZE)
                 IWL_SET_BITS16(shared_data->queues_byte_cnt_tbls[txq_id].
-                        tfd_offset[IWL4965_QUEUE_SIZE + txq->q.first_empty],
+                        tfd_offset[IWL4965_QUEUE_SIZE + txq->q.write_ptr],
                         byte_cnt, len);
 
         return 0;
@@ -4134,7 +4134,7 @@ static void iwl4965_rx_reply_compressed_ba(struct iwl_priv *priv,
 */
         iwl4965_tx_status_reply_compressed_ba(priv, agg, ba_resp);
         /* releases all the TFDs until the SSN */
-        if (txq->q.last_used != (ba_resp_scd_ssn & 0xff))
+        if (txq->q.read_ptr != (ba_resp_scd_ssn & 0xff))
                 iwl_tx_queue_reclaim(priv, ba_resp_scd_flow, index);
 
 }
@@ -4205,8 +4205,8 @@ static int iwl4965_tx_queue_agg_enable(struct iwl_priv *priv, int txq_id,
 
         iwl_set_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1<<txq_id));
 
-        priv->txq[txq_id].q.last_used = (ssn_idx & 0xff);
-        priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff);
+        priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
+        priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
 
         /* supposes that ssn_idx is valid (!= 0xFFF) */
         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);
@@ -4257,8 +4257,8 @@ static int iwl4965_tx_queue_agg_disable(struct iwl_priv *priv, u16 txq_id,
 
         iwl_clear_bits_restricted_reg(priv, SCD_QUEUECHAIN_SEL, (1 << txq_id));
 
-        priv->txq[txq_id].q.last_used = (ssn_idx & 0xff);
-        priv->txq[txq_id].q.first_empty = (ssn_idx & 0xff);
+        priv->txq[txq_id].q.read_ptr = (ssn_idx & 0xff);
+        priv->txq[txq_id].q.write_ptr = (ssn_idx & 0xff);
         /* supposes that ssn_idx is valid (!= 0xFFF) */
         iwl4965_set_wr_ptrs(priv, txq_id, ssn_idx);