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authorFrancois Romieu <romieu@fr.zoreil.com>2012-03-11 23:34:54 +0100
committerFrancois Romieu <romieu@fr.zoreil.com>2012-04-07 11:47:15 +0200
commitd59a1881c0ff63f9edbc7f4ad5a5e593fe779e1b (patch)
tree815a012e4baa5e1320cb7411f423cbee400334f5 /drivers/net/ethernet/dec
parent5e58deb917bfa8dad71cb2e2b9f9572746ff8e6a (diff)
downloadlinux-d59a1881c0ff63f9edbc7f4ad5a5e593fe779e1b.tar.bz2
xircom_cb: fix device probe error path.
- unbalanced pci_disable_device - PCI ressources were not released - mismatching pci_alloc_.../kfree pairs are replaced by DMA alloc helpers. Signed-off-by: Francois Romieu <romieu@fr.zoreil.com> Ack-by: Grant Grundler <grundler@parisc-linux.org>
Diffstat (limited to 'drivers/net/ethernet/dec')
-rw-r--r--drivers/net/ethernet/dec/tulip/xircom_cb.c53
1 files changed, 34 insertions, 19 deletions
diff --git a/drivers/net/ethernet/dec/tulip/xircom_cb.c b/drivers/net/ethernet/dec/tulip/xircom_cb.c
index fdb329fe6e8e..cbcc6d6f3f31 100644
--- a/drivers/net/ethernet/dec/tulip/xircom_cb.c
+++ b/drivers/net/ethernet/dec/tulip/xircom_cb.c
@@ -192,15 +192,18 @@ static const struct net_device_ops netdev_ops = {
*/
static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
+ struct device *d = &pdev->dev;
struct net_device *dev = NULL;
struct xircom_private *private;
unsigned long flags;
unsigned short tmp16;
+ int rc;
/* First do the PCI initialisation */
- if (pci_enable_device(pdev))
- return -ENODEV;
+ rc = pci_enable_device(pdev);
+ if (rc < 0)
+ goto out;
/* disable all powermanagement */
pci_write_config_dword(pdev, PCI_POWERMGMT, 0x0000);
@@ -211,11 +214,13 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
pci_read_config_word (pdev,PCI_STATUS, &tmp16);
pci_write_config_word (pdev, PCI_STATUS,tmp16);
- if (!request_region(pci_resource_start(pdev, 0), 128, "xircom_cb")) {
+ rc = pci_request_regions(pdev, "xircom_cb");
+ if (rc < 0) {
pr_err("%s: failed to allocate io-region\n", __func__);
- return -ENODEV;
+ goto err_disable;
}
+ rc = -ENOMEM;
/*
Before changing the hardware, allocate the memory.
This way, we can fail gracefully if not enough memory
@@ -223,17 +228,21 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
*/
dev = alloc_etherdev(sizeof(struct xircom_private));
if (!dev)
- goto device_fail;
+ goto err_release;
private = netdev_priv(dev);
/* Allocate the send/receive buffers */
- private->rx_buffer = pci_alloc_consistent(pdev,8192,&private->rx_dma_handle);
+ private->rx_buffer = dma_alloc_coherent(d, 8192,
+ &private->rx_dma_handle,
+ GFP_KERNEL);
if (private->rx_buffer == NULL) {
pr_err("%s: no memory for rx buffer\n", __func__);
goto rx_buf_fail;
}
- private->tx_buffer = pci_alloc_consistent(pdev,8192,&private->tx_dma_handle);
+ private->tx_buffer = dma_alloc_coherent(d, 8192,
+ &private->tx_dma_handle,
+ GFP_KERNEL);
if (private->tx_buffer == NULL) {
pr_err("%s: no memory for tx buffer\n", __func__);
goto tx_buf_fail;
@@ -256,7 +265,8 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
dev->netdev_ops = &netdev_ops;
pci_set_drvdata(pdev, dev);
- if (register_netdev(dev)) {
+ rc = register_netdev(dev);
+ if (rc < 0) {
pr_err("%s: netdevice registration failed\n", __func__);
goto reg_fail;
}
@@ -273,17 +283,21 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_
spin_unlock_irqrestore(&private->lock,flags);
trigger_receive(private);
-
- return 0;
+out:
+ return rc;
reg_fail:
- kfree(private->tx_buffer);
+ pci_set_drvdata(pdev, NULL);
+ dma_free_coherent(d, 8192, private->tx_buffer, private->tx_dma_handle);
tx_buf_fail:
- kfree(private->rx_buffer);
+ dma_free_coherent(d, 8192, private->rx_buffer, private->rx_dma_handle);
rx_buf_fail:
free_netdev(dev);
-device_fail:
- return -ENODEV;
+err_release:
+ pci_release_regions(pdev);
+err_disable:
+ pci_disable_device(pdev);
+ goto out;
}
@@ -297,14 +311,15 @@ static void __devexit xircom_remove(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct xircom_private *card = netdev_priv(dev);
+ struct device *d = &pdev->dev;
- pci_free_consistent(pdev,8192,card->rx_buffer,card->rx_dma_handle);
- pci_free_consistent(pdev,8192,card->tx_buffer,card->tx_dma_handle);
-
- release_region(dev->base_addr, 128);
unregister_netdev(dev);
- free_netdev(dev);
pci_set_drvdata(pdev, NULL);
+ dma_free_coherent(d, 8192, card->tx_buffer, card->tx_dma_handle);
+ dma_free_coherent(d, 8192, card->rx_buffer, card->rx_dma_handle);
+ free_netdev(dev);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
}
static irqreturn_t xircom_interrupt(int irq, void *dev_instance)