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vxge: cleanup probe error paths

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Reorder the commands to be in the inverse order of their allocations
(instead of the random order they appear to be in), propagate return
code on errors from pci_request_region and register_netdev, reduce the
config_dev_cnt and total_dev_cnt counters on remove, and return the
correct error code for vdev->vpaths kzalloc failures.  Also, prevent
leaking of vdev->vpaths memory and netdev in vxge_probe error path due
to freeing for these not occurring in vxge_device_unregister.

Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Sivakumar Subramani <sivakumar.subramani@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Mason 2011-01-18 15:02:19 +00:00 committed by David S. Miller
parent 80f8f1027b
commit 6cca200362
1 changed files with 25 additions and 30 deletions
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55
drivers/net/vxge/vxge-main.c
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@ -3348,7 +3348,7 @@ static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
vxge_debug_init(VXGE_ERR,
"%s: vpath memory allocation failed",
vdev->ndev->name);
ret = -ENODEV;
ret = -ENOMEM;
goto _out1;
}
@ -3369,11 +3369,11 @@ static int __devinit vxge_device_register(struct __vxge_hw_device *hldev,
if (vdev->config.gro_enable)
ndev->features |= NETIF_F_GRO;
if (register_netdev(ndev)) {
ret = register_netdev(ndev);
if (ret) {
vxge_debug_init(vxge_hw_device_trace_level_get(hldev),
"%s: %s : device registration failed!",
ndev->name, __func__);
ret = -ENODEV;
goto _out2;
}
@ -3444,6 +3444,11 @@ static void vxge_device_unregister(struct __vxge_hw_device *hldev)
/* in 2.6 will call stop() if device is up */
unregister_netdev(dev);
kfree(vdev->vpaths);
/* we are safe to free it now */
free_netdev(dev);
vxge_debug_init(vdev->level_trace, "%s: ethernet device unregistered",
buf);
vxge_debug_entryexit(vdev->level_trace, "%s: %s:%d Exiting...", buf,
@ -4335,10 +4340,10 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
goto _exit1;
}
if (pci_request_region(pdev, 0, VXGE_DRIVER_NAME)) {
ret = pci_request_region(pdev, 0, VXGE_DRIVER_NAME);
if (ret) {
vxge_debug_init(VXGE_ERR,
"%s : request regions failed", __func__);
ret = -ENODEV;
goto _exit1;
}
@ -4643,8 +4648,9 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
_exit5:
vxge_device_unregister(hldev);
_exit4:
pci_disable_sriov(pdev);
pci_set_drvdata(pdev, NULL);
vxge_hw_device_terminate(hldev);
pci_disable_sriov(pdev);
_exit3:
iounmap(attr.bar0);
_exit2:
@ -4655,7 +4661,7 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
kfree(ll_config);
kfree(device_config);
driver_config->config_dev_cnt--;
pci_set_drvdata(pdev, NULL);
driver_config->total_dev_cnt--;
return ret;
}
@ -4668,45 +4674,34 @@ vxge_probe(struct pci_dev *pdev, const struct pci_device_id *pre)
static void __devexit vxge_remove(struct pci_dev *pdev)
{
struct __vxge_hw_device *hldev;
struct vxgedev *vdev = NULL;
struct net_device *dev;
int i = 0;
struct vxgedev *vdev;
int i;
hldev = pci_get_drvdata(pdev);
if (hldev == NULL)
return;
dev = hldev->ndev;
vdev = netdev_priv(dev);
vdev = netdev_priv(hldev->ndev);
vxge_debug_entryexit(vdev->level_trace, "%s:%d", __func__, __LINE__);
vxge_debug_init(vdev->level_trace, "%s : removing PCI device...",
__func__);
vxge_device_unregister(hldev);
for (i = 0; i < vdev->no_of_vpath; i++) {
for (i = 0; i < vdev->no_of_vpath; i++)
vxge_free_mac_add_list(&vdev->vpaths[i]);
vdev->vpaths[i].mcast_addr_cnt = 0;
vdev->vpaths[i].mac_addr_cnt = 0;
}
kfree(vdev->vpaths);
vxge_device_unregister(hldev);
pci_set_drvdata(pdev, NULL);
/* Do not call pci_disable_sriov here, as it will break child devices */
vxge_hw_device_terminate(hldev);
iounmap(vdev->bar0);
/* we are safe to free it now */
free_netdev(dev);
pci_release_region(pdev, 0);
pci_disable_device(pdev);
driver_config->config_dev_cnt--;
driver_config->total_dev_cnt--;
vxge_debug_init(vdev->level_trace, "%s:%d Device unregistered",
__func__, __LINE__);
vxge_hw_device_terminate(hldev);
pci_disable_device(pdev);
pci_release_region(pdev, 0);
pci_set_drvdata(pdev, NULL);
vxge_debug_entryexit(vdev->level_trace, "%s:%d Exiting...", __func__,
__LINE__);
}