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| author | Jie Yang <jie.yang@atheros.com> | 2009-09-17 10:27:28 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-17 10:27:28 -0700 |
| commit | 03f18991614cba1fa5be5dcd1a79b0e30ac44c50 (patch) | |
| tree | 2b01d55c9c106d391c0ce9f01c9a6d240672ec81 /drivers | |
| parent | a19d2158439d6fba8160d7d2446f233f525f09e7 (diff) | |
| download | linux-03f18991614cba1fa5be5dcd1a79b0e30ac44c50.tar.gz linux-03f18991614cba1fa5be5dcd1a79b0e30ac44c50.tar.bz2 linux-03f18991614cba1fa5be5dcd1a79b0e30ac44c50.zip | |
atl1e: fix 2.6.31-git4 -- ATL1E 0000:03:00.0: DMA-API: device driver frees DMA
use the wrong API when free dma. So when map dma use a flag to
demostrate whether it is 'pci_map_single' or 'pci_map_page'. When free
the dma, check the flags to select the right APIs('pci_unmap_single'
or 'pci_unmap_page').
set the flags type to u16 instead of unsigned long on David's comments.
Signed-off-by: Jie Yang <jie.yang@atheros.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/atl1e/atl1e.h | 9 | ||||
| -rw-r--r-- | drivers/net/atl1e/atl1e_main.c | 15 |
2 files changed, 22 insertions, 2 deletions
diff --git a/drivers/net/atl1e/atl1e.h b/drivers/net/atl1e/atl1e.h index ba48220df16a..490d3b38e0cb 100644 --- a/drivers/net/atl1e/atl1e.h +++ b/drivers/net/atl1e/atl1e.h @@ -377,10 +377,19 @@ struct atl1e_hw { */ struct atl1e_tx_buffer { struct sk_buff *skb; + u16 flags; +#define ATL1E_TX_PCIMAP_SINGLE 0x0001 +#define ATL1E_TX_PCIMAP_PAGE 0x0002 +#define ATL1E_TX_PCIMAP_TYPE_MASK 0x0003 u16 length; dma_addr_t dma; }; +#define ATL1E_SET_PCIMAP_TYPE(tx_buff, type) do { \ + ((tx_buff)->flags) &= ~ATL1E_TX_PCIMAP_TYPE_MASK; \ + ((tx_buff)->flags) |= (type); \ + } while (0) + struct atl1e_rx_page { dma_addr_t dma; /* receive rage DMA address */ u8 *addr; /* receive rage virtual address */ diff --git a/drivers/net/atl1e/atl1e_main.c b/drivers/net/atl1e/atl1e_main.c index 69b830f4b68f..955da733c2ad 100644 --- a/drivers/net/atl1e/atl1e_main.c +++ b/drivers/net/atl1e/atl1e_main.c @@ -635,7 +635,11 @@ static void atl1e_clean_tx_ring(struct atl1e_adapter *adapter) for (index = 0; index < ring_count; index++) { tx_buffer = &tx_ring->tx_buffer[index]; if (tx_buffer->dma) { - pci_unmap_page(pdev, tx_buffer->dma, + if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) + pci_unmap_single(pdev, tx_buffer->dma, + tx_buffer->length, PCI_DMA_TODEVICE); + else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) + pci_unmap_page(pdev, tx_buffer->dma, tx_buffer->length, PCI_DMA_TODEVICE); tx_buffer->dma = 0; } @@ -1220,7 +1224,11 @@ static bool atl1e_clean_tx_irq(struct atl1e_adapter *adapter) while (next_to_clean != hw_next_to_clean) { tx_buffer = &tx_ring->tx_buffer[next_to_clean]; if (tx_buffer->dma) { - pci_unmap_page(adapter->pdev, tx_buffer->dma, + if (tx_buffer->flags & ATL1E_TX_PCIMAP_SINGLE) + pci_unmap_single(adapter->pdev, tx_buffer->dma, + tx_buffer->length, PCI_DMA_TODEVICE); + else if (tx_buffer->flags & ATL1E_TX_PCIMAP_PAGE) + pci_unmap_page(adapter->pdev, tx_buffer->dma, tx_buffer->length, PCI_DMA_TODEVICE); tx_buffer->dma = 0; } @@ -1741,6 +1749,7 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter, tx_buffer->length = map_len; tx_buffer->dma = pci_map_single(adapter->pdev, skb->data, hdr_len, PCI_DMA_TODEVICE); + ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); mapped_len += map_len; use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | @@ -1766,6 +1775,7 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter, tx_buffer->dma = pci_map_single(adapter->pdev, skb->data + mapped_len, map_len, PCI_DMA_TODEVICE); + ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_SINGLE); mapped_len += map_len; use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | @@ -1801,6 +1811,7 @@ static void atl1e_tx_map(struct atl1e_adapter *adapter, (i * MAX_TX_BUF_LEN), tx_buffer->length, PCI_DMA_TODEVICE); + ATL1E_SET_PCIMAP_TYPE(tx_buffer, ATL1E_TX_PCIMAP_PAGE); use_tpd->buffer_addr = cpu_to_le64(tx_buffer->dma); use_tpd->word2 = (use_tpd->word2 & (~TPD_BUFLEN_MASK)) | ((cpu_to_le32(tx_buffer->length) & |