uml: Eliminate temporary buffer in eth_configure
Avoid using the temporary buffer introduced by previous patch to hold the
device name.
Btw, avoid leaking device on an error path. Other error paths may need
cleanup.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index cd466e3..3f5e8e6 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -348,17 +348,24 @@
struct net_device *dev;
struct uml_net_private *lp;
int save, err, size;
- char name[sizeof(dev->name)];
size = transport->private_size + sizeof(struct uml_net_private) +
sizeof(((struct uml_net_private *) 0)->user);
device = kzalloc(sizeof(*device), GFP_KERNEL);
if (device == NULL) {
- printk(KERN_ERR "eth_configure failed to allocate uml_net\n");
+ printk(KERN_ERR "eth_configure failed to allocate struct "
+ "uml_net\n");
return;
}
+ dev = alloc_etherdev(size);
+ if (dev == NULL) {
+ printk(KERN_ERR "eth_configure: failed to allocate struct "
+ "net_device for eth%d\n", n);
+ goto out_free_device;
+ }
+
INIT_LIST_HEAD(&device->list);
device->index = n;
@@ -366,9 +373,9 @@
* netdevice, that is OK, register_netdev{,ice}() will notice this
* and fail.
*/
- snprintf(name, sizeof(name), "eth%d", n);
+ snprintf(dev->name, sizeof(dev->name), "eth%d", n);
- setup_etheraddr(mac, device->mac, name);
+ setup_etheraddr(mac, device->mac, dev->name);
printk(KERN_INFO "Netdevice %d ", n);
printk("(%02x:%02x:%02x:%02x:%02x:%02x) ",
@@ -376,11 +383,6 @@
device->mac[2], device->mac[3],
device->mac[4], device->mac[5]);
printk(": ");
- dev = alloc_etherdev(size);
- if (dev == NULL) {
- printk(KERN_ERR "eth_configure: failed to allocate device\n");
- goto out_free_device;
- }
lp = dev->priv;
/* This points to the transport private data. It's still clear, but we
@@ -399,7 +401,6 @@
goto out_free_netdev;
SET_NETDEV_DEV(dev,&device->pdev.dev);
- strcpy(dev->name, name);
device->dev = dev;
/*
@@ -466,13 +467,13 @@
return;
out_undo_user_init:
- if (transport->user->init != NULL)
+ if (transport->user->remove != NULL)
(*transport->user->remove)(&lp->user);
out_unregister:
platform_device_unregister(&device->pdev);
out_free_netdev:
free_netdev(dev);
-out_free_device: ;
+out_free_device:
kfree(device);
}