diff options
| author | David Woodhouse <dwmw2@infradead.org> | 2012-05-24 06:58:27 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-24 22:22:53 +0200 |
| commit | b4bd8ad9bb311e8536f726f7a633620ccd358cde (patch) | |
| tree | 8a372a2a2f8f5e52f282bb18657932730b7d89cf /drivers/atm/solos-pci.c | |
| parent | MAINTAINERS (diff) | |
| download | linux-b4bd8ad9bb311e8536f726f7a633620ccd358cde.tar.xz linux-b4bd8ad9bb311e8536f726f7a633620ccd358cde.zip | |
solos-pci: Fix DMA support
DMA support has finally made its way to the top of the TODO list, having
realised that a Geode using MMIO can't keep up with two ADSL2+ lines
each running at 21Mb/s.
This patch fixes a couple of bugs in the DMA support in the driver, so
once the corresponding FPGA update is complete and tested everything
should work properly.
We weren't storing the currently-transmitting skb, so we were never
unmapping it and never freeing/popping it when the TX was done.
And the addition of pci_set_master() is fairly self-explanatory.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/atm/solos-pci.c')
| -rw-r--r-- | drivers/atm/solos-pci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c index e8cd652d2017..98510931c815 100644 --- a/drivers/atm/solos-pci.c +++ b/drivers/atm/solos-pci.c @@ -984,6 +984,7 @@ static uint32_t fpga_tx(struct solos_card *card) } else if (skb && card->using_dma) { SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data, skb->len, PCI_DMA_TODEVICE); + card->tx_skb[port] = skb; iowrite32(SKB_CB(skb)->dma_addr, card->config_regs + TX_DMA_ADDR(port)); } @@ -1152,7 +1153,8 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) db_fpga_upgrade = db_firmware_upgrade = 0; } - if (card->fpga_version >= DMA_SUPPORTED){ + if (card->fpga_version >= DMA_SUPPORTED) { + pci_set_master(dev); card->using_dma = 1; } else { card->using_dma = 0; |