net: smsc911x: fix skb handling in receive path

[pandora-kernel.git] / drivers / net / ethernet / smsc / smsc911x.c

diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c
index 8843071..8c7dd21 100644 (file)
--- a/drivers/net/ethernet/smsc/smsc911x.c
+++ b/drivers/net/ethernet/smsc/smsc911x.c
@@ -1089,10 +1089,8 @@ smsc911x_rx_counterrors(struct net_device *dev, unsigned int rxstat)
 
 /* Quickly dumps bad packets */
 static void
-smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int pktbytes)
+smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int pktwords)
 {
-       unsigned int pktwords = (pktbytes + NET_IP_ALIGN + 3) >> 2;
-
        if (likely(pktwords >= 4)) {
                unsigned int timeout = 500;
                unsigned int val;
@@ -1156,7 +1154,7 @@ static int smsc911x_poll(struct napi_struct *napi, int budget)
                        continue;
                }
 
-               skb = netdev_alloc_skb(dev, pktlength + NET_IP_ALIGN);
+               skb = netdev_alloc_skb(dev, pktwords << 2);
                if (unlikely(!skb)) {
                        SMSC_WARN(pdata, rx_err,
                                  "Unable to allocate skb for rx packet");
@@ -1166,14 +1164,12 @@ static int smsc911x_poll(struct napi_struct *napi, int budget)
                        break;
                }
 
-               skb->data = skb->head;
-               skb_reset_tail_pointer(skb);
+               pdata->ops->rx_readfifo(pdata,
+                                (unsigned int *)skb->data, pktwords);
 
                /* Align IP on 16B boundary */
                skb_reserve(skb, NET_IP_ALIGN);
                skb_put(skb, pktlength - 4);
-               pdata->ops->rx_readfifo(pdata,
-                                (unsigned int *)skb->head, pktwords);
                skb->protocol = eth_type_trans(skb, dev);
                skb_checksum_none_assert(skb);
                netif_receive_skb(skb);
@@ -1396,7 +1392,7 @@ static int smsc911x_open(struct net_device *dev)
        smsc911x_reg_write(pdata, FIFO_INT, temp);
 
        /* set RX Data offset to 2 bytes for alignment */
-       smsc911x_reg_write(pdata, RX_CFG, (2 << 8));
+       smsc911x_reg_write(pdata, RX_CFG, (NET_IP_ALIGN << 8));
 
        /* enable NAPI polling before enabling RX interrupts */
        napi_enable(&pdata->napi);