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RDMA/amso1100: Fix unitialized pseudo_netdev accessed in c2_register_device 

Rework some load-time error handling: c2_register_device() leaked when
it failed, and the function that called it didn't check the return code.

Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Tom Tucker 2006-11-08 14:23:22 -06:00 committed by Roland Dreier
parent f2c238a0c5
commit 2ffcab6ae4
2 changed files with 22 additions and 20 deletions
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3
drivers/infiniband/hw/amso1100/c2.c
View File

@ -1155,7 +1155,8 @@ static int __devinit c2_probe(struct pci_dev *pcidev,
goto bail10;
}
c2_register_device(c2dev);
if (c2_register_device(c2dev))
goto bail10;
return 0;

39
drivers/infiniband/hw/amso1100/c2_provider.c
View File

@ -757,20 +757,17 @@ static struct net_device *c2_pseudo_netdev_init(struct c2_dev *c2dev)
int c2_register_device(struct c2_dev *dev)
{
int ret;
int ret = -ENOMEM;
int i;
/* Register pseudo network device */
dev->pseudo_netdev = c2_pseudo_netdev_init(dev);
if (dev->pseudo_netdev) {
ret = register_netdev(dev->pseudo_netdev);
if (ret) {
printk(KERN_ERR PFX
"Unable to register netdev, ret = %d\n", ret);
free_netdev(dev->pseudo_netdev);
return ret;
}
}
if (!dev->pseudo_netdev)
goto out3;
ret = register_netdev(dev->pseudo_netdev);
if (ret)
goto out2;
pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
strlcpy(dev->ibdev.name, "amso%d", IB_DEVICE_NAME_MAX);
@ -848,21 +845,25 @@ int c2_register_device(struct c2_dev *dev)
ret = ib_register_device(&dev->ibdev);
if (ret)
return ret;
goto out1;
for (i = 0; i < ARRAY_SIZE(c2_class_attributes); ++i) {
ret = class_device_create_file(&dev->ibdev.class_dev,
c2_class_attributes[i]);
if (ret) {
unregister_netdev(dev->pseudo_netdev);
free_netdev(dev->pseudo_netdev);
ib_unregister_device(&dev->ibdev);
return ret;
}
if (ret)
goto out0;
}
goto out3;
pr_debug("%s:%u\n", __FUNCTION__, __LINE__);
return 0;
out0:
ib_unregister_device(&dev->ibdev);
out1:
unregister_netdev(dev->pseudo_netdev);
out2:
free_netdev(dev->pseudo_netdev);
out3:
pr_debug("%s:%u ret=%d\n", __FUNCTION__, __LINE__, ret);
return ret;
}
void c2_unregister_device(struct c2_dev *dev)