diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/r6040.c | 53 |
1 files changed, 44 insertions, 9 deletions
diff --git a/drivers/net/r6040.c b/drivers/net/r6040.c index 0972152e5d2..4f2ebb2e71b 100644 --- a/drivers/net/r6040.c +++ b/drivers/net/r6040.c @@ -312,7 +312,7 @@ static void r6040_rx_buf_alloc(struct r6040_private *lp, struct net_device *dev) lp->rx_insert_ptr = descptr; } -static void r6040_alloc_txbufs(struct net_device *dev) +static void r6040_init_txbufs(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); @@ -322,16 +322,39 @@ static void r6040_alloc_txbufs(struct net_device *dev) r6040_init_ring_desc(lp->tx_ring, lp->tx_ring_dma, TX_DCNT); } -static void r6040_alloc_rxbufs(struct net_device *dev) +static int r6040_alloc_rxbufs(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); - - lp->rx_free_desc = 0; + struct r6040_descriptor *desc; + struct sk_buff *skb; + int rc; lp->rx_remove_ptr = lp->rx_insert_ptr = lp->rx_ring; r6040_init_ring_desc(lp->rx_ring, lp->rx_ring_dma, RX_DCNT); - r6040_rx_buf_alloc(lp, dev); + /* Allocate skbs for the rx descriptors */ + desc = lp->rx_ring; + do { + skb = netdev_alloc_skb(dev, MAX_BUF_SIZE); + if (!skb) { + printk(KERN_ERR "%s: failed to alloc skb for rx\n", dev->name); + rc = -ENOMEM; + goto err_exit; + } + desc->skb_ptr = skb; + desc->buf = cpu_to_le32(pci_map_single(lp->pdev, + desc->skb_ptr->data, + MAX_BUF_SIZE, PCI_DMA_FROMDEVICE)); + desc->status = 0x8000; + desc = desc->vndescp; + } while (desc != lp->rx_ring); + + return 0; + +err_exit: + /* Deallocate all previously allocated skbs */ + r6040_free_rxbufs(dev); + return rc; } static void r6040_init_mac_regs(struct net_device *dev) @@ -697,14 +720,17 @@ static void r6040_poll_controller(struct net_device *dev) #endif /* Init RDC MAC */ -static void r6040_up(struct net_device *dev) +static int r6040_up(struct net_device *dev) { struct r6040_private *lp = netdev_priv(dev); void __iomem *ioaddr = lp->base; + int ret; /* Initialise and alloc RX/TX buffers */ - r6040_alloc_txbufs(dev); - r6040_alloc_rxbufs(dev); + r6040_init_txbufs(dev); + ret = r6040_alloc_rxbufs(dev); + if (ret) + return ret; /* Read the PHY ID */ lp->switch_sig = r6040_phy_read(ioaddr, 0, 2); @@ -734,6 +760,8 @@ static void r6040_up(struct net_device *dev) /* Initialize all MAC registers */ r6040_init_mac_regs(dev); + + return 0; } /* @@ -812,7 +840,14 @@ static int r6040_open(struct net_device *dev) return -ENOMEM; } - r6040_up(dev); + ret = r6040_up(dev); + if (ret) { + pci_free_consistent(lp->pdev, TX_DESC_SIZE, lp->tx_ring, + lp->tx_ring_dma); + pci_free_consistent(lp->pdev, RX_DESC_SIZE, lp->rx_ring, + lp->rx_ring_dma); + return ret; + } napi_enable(&lp->napi); netif_start_queue(dev); |