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net: atheros: atl1: use offset_in_page() macro

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Use offset_in_page() macro instead of open-coding.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang 2017-04-22 09:21:10 +08:00 committed by David S. Miller
parent 4dd42b94b4
commit 4cc17bcf7f
1 changed files with 5 additions and 6 deletions
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11
drivers/net/ethernet/atheros/atlx/atl1.c
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@ -1886,7 +1886,7 @@ static u16 atl1_alloc_rx_buffers(struct atl1_adapter *adapter)
buffer_info->skb = skb;
buffer_info->length = (u16) adapter->rx_buffer_len;
page = virt_to_page(skb->data);
offset = (unsigned long)skb->data & ~PAGE_MASK;
offset = offset_in_page(skb->data);
buffer_info->dma = pci_map_page(pdev, page, offset,
adapter->rx_buffer_len,
PCI_DMA_FROMDEVICE);
@ -2230,7 +2230,7 @@ static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb);
buffer_info->length = hdr_len;
page = virt_to_page(skb->data);
offset = (unsigned long)skb->data & ~PAGE_MASK;
offset = offset_in_page(skb->data);
buffer_info->dma = pci_map_page(adapter->pdev, page,
offset, hdr_len,
PCI_DMA_TODEVICE);
@ -2254,9 +2254,8 @@ static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
data_len -= buffer_info->length;
page = virt_to_page(skb->data +
(hdr_len + i * ATL1_MAX_TX_BUF_LEN));
offset = (unsigned long)(skb->data +
(hdr_len + i * ATL1_MAX_TX_BUF_LEN)) &
~PAGE_MASK;
offset = offset_in_page(skb->data +
(hdr_len + i * ATL1_MAX_TX_BUF_LEN));
buffer_info->dma = pci_map_page(adapter->pdev,
page, offset, buffer_info->length,
PCI_DMA_TODEVICE);
@ -2268,7 +2267,7 @@ static void atl1_tx_map(struct atl1_adapter *adapter, struct sk_buff *skb,
/* not TSO */
buffer_info->length = buf_len;
page = virt_to_page(skb->data);
offset = (unsigned long)skb->data & ~PAGE_MASK;
offset = offset_in_page(skb->data);
buffer_info->dma = pci_map_page(adapter->pdev, page,
offset, buf_len, PCI_DMA_TODEVICE);
if (++next_to_use == tpd_ring->count)