iwlwifi: cleanup return values

Cleanup return values and removes unnecessary code.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>

4 files changed, 17 insertions, 37 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index df558796fbe..530fae8cf16 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -414,13 +414,13 @@ void iwl_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 void iwl_cmd_queue_free(struct iwl_priv *priv);
 int iwl_rx_queue_alloc(struct iwl_priv *priv);
 void iwl_rx_handle(struct iwl_priv *priv);
-int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
+void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv,
                                   struct iwl_rx_queue *q);
 void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
 void iwl_rx_replenish(struct iwl_priv *priv);
 void iwl_rx_replenish_now(struct iwl_priv *priv);
 int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
-int iwl_rx_queue_restock(struct iwl_priv *priv);
+void iwl_rx_queue_restock(struct iwl_priv *priv);
 int iwl_rx_queue_space(const struct iwl_rx_queue *q);
 void iwl_rx_allocate(struct iwl_priv *priv, gfp_t priority);
 void iwl_tx_cmd_complete(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb);
@@ -450,7 +450,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb);
 void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
 int iwl_hw_tx_queue_init(struct iwl_priv *priv,
                          struct iwl_tx_queue *txq);
-int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
+void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq);
 int iwl_tx_queue_init(struct iwl_priv *priv, struct iwl_tx_queue *txq,
                       int slots_num, u32 txq_id);
 void iwl_tx_queue_free(struct iwl_priv *priv, int txq_id);
diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c
index 909d9c9b9ad..428c9d689d4 100644
--- a/drivers/net/wireless/iwlwifi/iwl-rx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-rx.c
@@ -123,12 +123,11 @@ EXPORT_SYMBOL(iwl_rx_queue_space);
 /**
  * iwl_rx_queue_update_write_ptr - Update the write pointer for the RX queue
  */
-int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
+void iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
 {
         unsigned long flags;
         u32 rx_wrt_ptr_reg = priv->hw_params.rx_wrt_ptr_reg;
         u32 reg;
-        int ret = 0;
 
         spin_lock_irqsave(&q->lock, flags);
 
@@ -161,7 +160,6 @@ int iwl_rx_queue_update_write_ptr(struct iwl_priv *priv, struct iwl_rx_queue *q)
 
  exit_unlock:
         spin_unlock_irqrestore(&q->lock, flags);
-        return ret;
 }
 EXPORT_SYMBOL(iwl_rx_queue_update_write_ptr);
 /**
@@ -184,14 +182,13 @@ static inline __le32 iwl_dma_addr2rbd_ptr(struct iwl_priv *priv,
  * also updates the memory address in the firmware to reference the new
  * target buffer.
  */
-int iwl_rx_queue_restock(struct iwl_priv *priv)
+void iwl_rx_queue_restock(struct iwl_priv *priv)
 {
         struct iwl_rx_queue *rxq = &priv->rxq;
         struct list_head *element;
         struct iwl_rx_mem_buffer *rxb;
         unsigned long flags;
         int write;
-        int ret = 0;
 
         spin_lock_irqsave(&rxq->lock, flags);
         write = rxq->write & ~0x7;
@@ -220,10 +217,8 @@ int iwl_rx_queue_restock(struct iwl_priv *priv)
                 spin_lock_irqsave(&rxq->lock, flags);
                 rxq->need_update = 1;
                 spin_unlock_irqrestore(&rxq->lock, flags);
-                ret = iwl_rx_queue_update_write_ptr(priv, rxq);
+                iwl_rx_queue_update_write_ptr(priv, rxq);
         }
-
-        return ret;
 }
 EXPORT_SYMBOL(iwl_rx_queue_restock);
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-tx.c b/drivers/net/wireless/iwlwifi/iwl-tx.c
index 3788a3d4ddc..2199b1bc1c2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-tx.c
@@ -80,14 +80,13 @@ static inline void iwl_free_dma_ptr(struct iwl_priv *priv,
 /**
  * iwl_txq_update_write_ptr - Send new write index to hardware
  */
-int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
+void iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
 {
         u32 reg = 0;
-        int ret = 0;
         int txq_id = txq->q.id;
 
         if (txq->need_update == 0)
-                return ret;
+                return;
 
         /* if we're trying to save power */
         if (test_bit(STATUS_POWER_PMI, &priv->status)) {
@@ -101,7 +100,7 @@ int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
                                       txq_id, reg);
                         iwl_set_bit(priv, CSR_GP_CNTRL,
                                     CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
-                        return ret;
+                        return;
                 }
 
                 iwl_write_direct32(priv, HBUS_TARG_WRPTR,
@@ -114,8 +113,6 @@ int iwl_txq_update_write_ptr(struct iwl_priv *priv, struct iwl_tx_queue *txq)
                             txq->q.write_ptr | (txq_id << 8));
 
         txq->need_update = 0;
-
-        return ret;
 }
 EXPORT_SYMBOL(iwl_txq_update_write_ptr);
 
@@ -731,7 +728,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
         u8 tid = 0;
         u8 *qc = NULL;
         unsigned long flags;
-        int ret;
 
         spin_lock_irqsave(&priv->lock, flags);
         if (iwl_is_rfkill(priv)) {
@@ -951,7 +947,7 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
         /* Tell device the write index *just past* this latest filled TFD */
         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
-        ret = iwl_txq_update_write_ptr(priv, txq);
+        iwl_txq_update_write_ptr(priv, txq);
         spin_unlock_irqrestore(&priv->lock, flags);
 
         /*
@@ -965,9 +961,6 @@ int iwl_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
         if (sta_priv && sta_priv->client)
                 atomic_inc(&sta_priv->pending_frames);
 
-        if (ret)
-                return ret;
-
         if ((iwl_queue_space(q) < q->high_mark) && priv->mac80211_registered) {
                 if (wait_write_ptr) {
                         spin_lock_irqsave(&priv->lock, flags);
@@ -1006,7 +999,7 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
         struct iwl_cmd_meta *out_meta;
         dma_addr_t phys_addr;
         unsigned long flags;
-        int len, ret;
+        int len;
         u32 idx;
         u16 fix_size;
 
@@ -1103,10 +1096,10 @@ int iwl_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd)
 
         /* Increment and update queue's write index */
         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
-        ret = iwl_txq_update_write_ptr(priv, txq);
+        iwl_txq_update_write_ptr(priv, txq);
 
         spin_unlock_irqrestore(&priv->hcmd_lock, flags);
-        return ret ? ret : idx;
+        return idx;
 }
 
 static void iwl_tx_status(struct iwl_priv *priv, struct sk_buff *skb)
diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c
index eac2b9a9571..f6e8f45ff7f 100644
--- a/drivers/net/wireless/iwlwifi/iwl3945-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c
@@ -478,7 +478,6 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
         u8 wait_write_ptr = 0;
         u8 *qc = NULL;
         unsigned long flags;
-        int rc;
 
         spin_lock_irqsave(&priv->lock, flags);
         if (iwl_is_rfkill(priv)) {
@@ -663,12 +662,9 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb)
 
         /* Tell device the write index *just past* this latest filled TFD */
         q->write_ptr = iwl_queue_inc_wrap(q->write_ptr, q->n_bd);
-        rc = iwl_txq_update_write_ptr(priv, txq);
+        iwl_txq_update_write_ptr(priv, txq);
         spin_unlock_irqrestore(&priv->lock, flags);
 
-        if (rc)
-                return rc;
-
         if ((iwl_queue_space(q) < q->high_mark)
             && priv->mac80211_registered) {
                 if (wait_write_ptr) {
@@ -1063,13 +1059,13 @@ static inline __le32 iwl3945_dma_addr2rbd_ptr(struct iwl_priv *priv,
  * also updates the memory address in the firmware to reference the new
  * target buffer.
  */
-static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
+static void iwl3945_rx_queue_restock(struct iwl_priv *priv)
 {
         struct iwl_rx_queue *rxq = &priv->rxq;
         struct list_head *element;
         struct iwl_rx_mem_buffer *rxb;
         unsigned long flags;
-        int write, rc;
+        int write;
 
         spin_lock_irqsave(&rxq->lock, flags);
         write = rxq->write & ~0x7;
@@ -1099,12 +1095,8 @@ static int iwl3945_rx_queue_restock(struct iwl_priv *priv)
                 spin_lock_irqsave(&rxq->lock, flags);
                 rxq->need_update = 1;
                 spin_unlock_irqrestore(&rxq->lock, flags);
-                rc = iwl_rx_queue_update_write_ptr(priv, rxq);
-                if (rc)
-                        return rc;
+                iwl_rx_queue_update_write_ptr(priv, rxq);
         }
-
-        return 0;
 }
 
 /**