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r6040: rework init_one error handling 

This patch reworks the error handling in r6040_init_one
in order not to leak resources and correcly unmap and release
PCI regions of the MAC. Also prefix printk's with the driver name
for clarity.

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Florian Fainelli 2008-07-21 12:32:29 +02:00 committed by Jeff Garzik
parent 1de95294f1
commit b0e453902a
1 changed files with 25 additions and 19 deletions
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44
drivers/net/r6040.c
View File

@ -1054,24 +1054,27 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
err = pci_enable_device(pdev);
if (err)
return err;
goto err_out;
/* this should always be supported */
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses"
"not supported by the card\n");
return -ENODEV;
goto err_out;
}
if (pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
if (err) {
printk(KERN_ERR DRV_NAME "32-bit PCI DMA addresses"
"not supported by the card\n");
return -ENODEV;
goto err_out;
}
/* IO Size check */
if (pci_resource_len(pdev, 0) < io_size) {
printk(KERN_ERR "Insufficient PCI resources, aborting\n");
return -EIO;
printk(KERN_ERR DRV_NAME "Insufficient PCI resources, aborting\n");
err = -EIO;
goto err_out;
}
pioaddr = pci_resource_start(pdev, 0); /* IO map base address */
@ -1079,23 +1082,26 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
dev = alloc_etherdev(sizeof(struct r6040_private));
if (!dev) {
printk(KERN_ERR "Failed to allocate etherdev\n");
return -ENOMEM;
printk(KERN_ERR DRV_NAME "Failed to allocate etherdev\n");
err = -ENOMEM;
goto err_out;
}
SET_NETDEV_DEV(dev, &pdev->dev);
lp = netdev_priv(dev);
if (pci_request_regions(pdev, DRV_NAME)) {
err = pci_request_regions(pdev, DRV_NAME);
if (err) {
printk(KERN_ERR DRV_NAME ": Failed to request PCI regions\n");
err = -ENODEV;
goto err_out_disable;
goto err_out_free_dev;
}
ioaddr = pci_iomap(pdev, bar, io_size);
if (!ioaddr) {
printk(KERN_ERR "ioremap failed for device %s\n",
pci_name(pdev));
return -EIO;
err = -EIO;
goto err_out_free_res;
}
/* Init system & device */
@ -1147,17 +1153,17 @@ static int __devinit r6040_init_one(struct pci_dev *pdev,
err = register_netdev(dev);
if (err) {
printk(KERN_ERR DRV_NAME ": Failed to register net device\n");
goto err_out_res;
goto err_out_unmap;
}
return 0;
err_out_res:
err_out_unmap:
pci_iounmap(pdev, ioaddr);
err_out_free_res:
pci_release_regions(pdev);
err_out_disable:
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
err_out_free_dev:
free_netdev(dev);
err_out:
return err;
}