From c8d90dca3211966ba5189e0f3d4bccd558d9ae08 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Fri, 26 Oct 2007 03:53:42 -0700 Subject: [PATCH] [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 Signed-off-by: David S. Miller --- net/core/dev.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/core/dev.c b/net/core/dev.c index f1647d7dd14b..ddfef3b45bab 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, '%')) { -- 2.30.2