net: r6040: Utilize skb_put_padto()

Pad the SKB to the minimum length of ETH_ZLEN by using skb_put_padto()
and take this operation out of the critical section since there is no
need to check any HW resources before doing that.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/rdc/r6040.c b/drivers/net/ethernet/rdc/r6040.c
index 75776ee..46ed093 100644 (file)
--- a/drivers/net/ethernet/rdc/r6040.c
+++ b/drivers/net/ethernet/rdc/r6040.c
@@ -815,6 +815,9 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
        void __iomem *ioaddr = lp->base;
        unsigned long flags;
 
+       if (skb_put_padto(skb, ETH_ZLEN) < 0)
+               return NETDEV_TX_OK;
+
        /* Critical Section */
        spin_lock_irqsave(&lp->lock, flags);
 
@@ -829,11 +832,7 @@ static netdev_tx_t r6040_start_xmit(struct sk_buff *skb,
        /* Set TX descriptor & Transmit it */
        lp->tx_free_desc--;
        descptr = lp->tx_insert_ptr;
-       if (skb->len < ETH_ZLEN)
-               descptr->len = ETH_ZLEN;
-       else
-               descptr->len = skb->len;
-
+       descptr->len = skb->len;
        descptr->skb_ptr = skb;
        descptr->buf = cpu_to_le32(pci_map_single(lp->pdev,
                skb->data, skb->len, PCI_DMA_TODEVICE));