atmel: use netstats in net_device structure

Use net_device_stats from net_device structure instead of local.
Kill atmel_get_stats function, because by default it is used
identical internal_stats function from net/core/dev.c
No need to memset stats to 0, because they are allocated by kzalloc.

P.S. Someone should cleanup init_atmel_card function from unneeded
initializations to 0/NULL. Out of scope for this patch.

Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 18 insertions, 28 deletions

diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c
index ef2da4023d68..f978a9d5190b 100644
--- a/drivers/net/wireless/atmel.c
+++ b/drivers/net/wireless/atmel.c
@@ -433,7 +433,6 @@ struct atmel_private {
         struct net_device *dev;
         struct device *sys_dev;
         struct iw_statistics wstats;
-        struct net_device_stats stats;  // device stats
         spinlock_t irqlock, timerlock;  // spinlocks
         enum { BUS_TYPE_PCCARD, BUS_TYPE_PCI } bus_type;
         enum {
@@ -694,9 +693,9 @@ static void tx_done_irq(struct atmel_private *priv)
 
                 if (type == TX_PACKET_TYPE_DATA) {
                         if (status == TX_STATUS_SUCCESS)
-                                priv->stats.tx_packets++;
+                                priv->dev->stats.tx_packets++;
                         else
-                                priv->stats.tx_errors++;
+                                priv->dev->stats.tx_errors++;
                         netif_wake_queue(priv->dev);
                 }
         }
@@ -792,13 +791,13 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev)
 
         if (priv->card && priv->present_callback &&
             !(*priv->present_callback)(priv->card)) {
-                priv->stats.tx_errors++;
+                dev->stats.tx_errors++;
                 dev_kfree_skb(skb);
                 return 0;
         }
 
         if (priv->station_state != STATION_STATE_READY) {
-                priv->stats.tx_errors++;
+                dev->stats.tx_errors++;
                 dev_kfree_skb(skb);
                 return 0;
         }
@@ -815,7 +814,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev)
            initial + 18 (+30-12) */
 
         if (!(buff = find_tx_buff(priv, len + 18))) {
-                priv->stats.tx_dropped++;
+                dev->stats.tx_dropped++;
                 spin_unlock_irqrestore(&priv->irqlock, flags);
                 spin_unlock_bh(&priv->timerlock);
                 netif_stop_queue(dev);
@@ -851,7 +850,7 @@ static int start_tx(struct sk_buff *skb, struct net_device *dev)
         /* low bit of first byte of destination tells us if broadcast */
         tx_update_descriptor(priv, *(skb->data) & 0x01, len + 18, buff, TX_PACKET_TYPE_DATA);
         dev->trans_start = jiffies;
-        priv->stats.tx_bytes += len;
+        dev->stats.tx_bytes += len;
 
         spin_unlock_irqrestore(&priv->irqlock, flags);
         spin_unlock_bh(&priv->timerlock);
@@ -895,7 +894,7 @@ static void fast_rx_path(struct atmel_private *priv,
         }
 
         if (!(skb = dev_alloc_skb(msdu_size + 14))) {
-                priv->stats.rx_dropped++;
+                priv->dev->stats.rx_dropped++;
                 return;
         }
 
@@ -908,7 +907,7 @@ static void fast_rx_path(struct atmel_private *priv,
                 crc = crc32_le(crc, skbp + 12, msdu_size);
                 atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + 30 + msdu_size, 4);
                 if ((crc ^ 0xffffffff) != netcrc) {
-                        priv->stats.rx_crc_errors++;
+                        priv->dev->stats.rx_crc_errors++;
                         dev_kfree_skb(skb);
                         return;
                 }
@@ -924,8 +923,8 @@ static void fast_rx_path(struct atmel_private *priv,
         skb->protocol = eth_type_trans(skb, priv->dev);
         skb->ip_summed = CHECKSUM_NONE;
         netif_rx(skb);
-        priv->stats.rx_bytes += 12 + msdu_size;
-        priv->stats.rx_packets++;
+        priv->dev->stats.rx_bytes += 12 + msdu_size;
+        priv->dev->stats.rx_packets++;
 }
 
 /* Test to see if the packet in card memory at packet_loc has a valid CRC
@@ -991,7 +990,7 @@ static void frag_rx_path(struct atmel_private *priv,
                         crc = crc32_le(crc, &priv->rx_buf[12], msdu_size);
                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
                         if ((crc ^ 0xffffffff) != netcrc) {
-                                priv->stats.rx_crc_errors++;
+                                priv->dev->stats.rx_crc_errors++;
                                 memset(priv->frag_source, 0xff, 6);
                         }
                 }
@@ -1009,7 +1008,7 @@ static void frag_rx_path(struct atmel_private *priv,
                                        msdu_size);
                         atmel_copy_to_host(priv->dev, (void *)&netcrc, rx_packet_loc + msdu_size, 4);
                         if ((crc ^ 0xffffffff) != netcrc) {
-                                priv->stats.rx_crc_errors++;
+                                priv->dev->stats.rx_crc_errors++;
                                 memset(priv->frag_source, 0xff, 6);
                                 more_frags = 1; /* don't send broken assembly */
                         }
@@ -1021,7 +1020,7 @@ static void frag_rx_path(struct atmel_private *priv,
                 if (!more_frags) { /* last one */
                         memset(priv->frag_source, 0xff, 6);
                         if (!(skb = dev_alloc_skb(priv->frag_len + 14))) {
-                                priv->stats.rx_dropped++;
+                                priv->dev->stats.rx_dropped++;
                         } else {
                                 skb_reserve(skb, 2);
                                 memcpy(skb_put(skb, priv->frag_len + 12),
@@ -1031,8 +1030,8 @@ static void frag_rx_path(struct atmel_private *priv,
                                 skb->protocol = eth_type_trans(skb, priv->dev);
                                 skb->ip_summed = CHECKSUM_NONE;
                                 netif_rx(skb);
-                                priv->stats.rx_bytes += priv->frag_len + 12;
-                                priv->stats.rx_packets++;
+                                priv->dev->stats.rx_bytes += priv->frag_len + 12;
+                                priv->dev->stats.rx_packets++;
                         }
                 }
         } else
@@ -1057,7 +1056,7 @@ static void rx_done_irq(struct atmel_private *priv)
                         if (status == 0xc1) /* determined by experiment */
                                 priv->wstats.discard.nwid++;
                         else
-                                priv->stats.rx_errors++;
+                                priv->dev->stats.rx_errors++;
                         goto next;
                 }
 
@@ -1065,7 +1064,7 @@ static void rx_done_irq(struct atmel_private *priv)
                 rx_packet_loc = atmel_rmem16(priv, atmel_rx(priv, RX_DESC_MSDU_POS_OFFSET, priv->rx_desc_head));
 
                 if (msdu_size < 30) {
-                        priv->stats.rx_errors++;
+                        priv->dev->stats.rx_errors++;
                         goto next;
                 }
 
@@ -1123,7 +1122,7 @@ static void rx_done_irq(struct atmel_private *priv)
                                 msdu_size -= 4;
                                 crc = crc32_le(crc, (unsigned char *)&priv->rx_buf, msdu_size);
                                 if ((crc ^ 0xffffffff) != (*((u32 *)&priv->rx_buf[msdu_size]))) {
-                                        priv->stats.rx_crc_errors++;
+                                        priv->dev->stats.rx_crc_errors++;
                                         goto next;
                                 }
                         }
@@ -1250,12 +1249,6 @@ static irqreturn_t service_interrupt(int irq, void *dev_id)
         }
 }
 
-static struct net_device_stats *atmel_get_stats(struct net_device *dev)
-{
-        struct atmel_private *priv = netdev_priv(dev);
-        return &priv->stats;
-}
-
 static struct iw_statistics *atmel_get_wireless_stats(struct net_device *dev)
 {
         struct atmel_private *priv = netdev_priv(dev);
@@ -1518,8 +1511,6 @@ struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
                 priv->crc_ok_cnt = priv->crc_ko_cnt = 0;
         } else
                 priv->probe_crc = 0;
-        memset(&priv->stats, 0, sizeof(priv->stats));
-        memset(&priv->wstats, 0, sizeof(priv->wstats));
         priv->last_qual = jiffies;
         priv->last_beacon_timestamp = 0;
         memset(priv->frag_source, 0xff, sizeof(priv->frag_source));
@@ -1568,7 +1559,6 @@ struct net_device *init_atmel_card(unsigned short irq, unsigned long port,
         dev->change_mtu = atmel_change_mtu;
         dev->set_mac_address = atmel_set_mac_address;
         dev->hard_start_xmit = start_tx;
-        dev->get_stats = atmel_get_stats;
         dev->wireless_handlers = (struct iw_handler_def *)&atmel_handler_def;
         dev->do_ioctl = atmel_ioctl;
         dev->irq = irq;