Commit:     c8d90dca3211966ba5189e0f3d4bccd558d9ae08
Parent:     8c56a347c1dfbe384b1ffb65d8828faa36dbaea4
Author:     Stephen Hemminger <[EMAIL PROTECTED]>
AuthorDate: Fri Oct 26 03:53:42 2007 -0700
Committer:  David S. Miller <[EMAIL PROTECTED]>
CommitDate: Fri Oct 26 03:53:42 2007 -0700

    [NET] dev_change_name: ignore changes to same name
    Prevent error/backtrace from dev_rename() when changing
    name of network device to the same name. This is a common
    situation with udev and other scripts that bind addr to device.
    Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
    Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
 net/core/dev.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/net/core/dev.c b/net/core/dev.c
index f1647d7..ddfef3b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -883,6 +883,9 @@ int dev_change_name(struct net_device *dev, char *newname)
        if (!dev_valid_name(newname))
                return -EINVAL;
+       if (strncmp(newname, dev->name, IFNAMSIZ) == 0)
+               return 0;
        memcpy(oldname, dev->name, IFNAMSIZ);
        if (strchr(newname, '%')) {
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