aboutsummaryrefslogtreecommitdiff
path: root/drivers/atm
diff options
context:
space:
mode:
authorDavid Woodhouse <dwmw2@infradead.org>2012-05-24 04:58:27 +0000
committerDavid S. Miller <davem@davemloft.net>2012-05-24 16:22:53 -0400
commitb4bd8ad9bb311e8536f726f7a633620ccd358cde (patch)
tree8a372a2a2f8f5e52f282bb18657932730b7d89cf /drivers/atm
parentf935f3f8a567d3d2531886e901ed0db183092abe (diff)
downloadlinux-b4bd8ad9bb311e8536f726f7a633620ccd358cde.tar.gz
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')
-rw-r--r--drivers/atm/solos-pci.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index e8cd652d201..98510931c81 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;