desc[frag].len_vlan = skb_headlen(skb) / 2;
                                dma_addr = dma_map_single(&adapter->pdev->dev,
                                                          skb->data,
-                                                         (skb_headlen(skb) / 2),
+                                                         skb_headlen(skb) / 2,
                                                          DMA_TO_DEVICE);
                                desc[frag].addr_lo = lower_32_bits(dma_addr);
                                desc[frag].addr_hi = upper_32_bits(dma_addr);
                                desc[frag].len_vlan = skb_headlen(skb) / 2;
                                dma_addr = dma_map_single(&adapter->pdev->dev,
                                                          skb->data +
-                                                         (skb_headlen(skb) / 2),
-                                                         (skb_headlen(skb) / 2),
+                                                         skb_headlen(skb) / 2,
+                                                         skb_headlen(skb) / 2,
                                                          DMA_TO_DEVICE);
                                desc[frag].addr_lo = lower_32_bits(dma_addr);
                                desc[frag].addr_hi = upper_32_bits(dma_addr);