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-rw-r--r--net/atm/br2684.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 6dc383c90262..403e71fa88fe 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -735,10 +735,13 @@ static int br2684_ioctl(struct socket *sock, unsigned int cmd,
return -ENOIOCTLCMD;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
- if (cmd == ATM_SETBACKEND)
+ if (cmd == ATM_SETBACKEND) {
+ if (sock->state != SS_CONNECTED)
+ return -EINVAL;
return br2684_regvcc(atmvcc, argp);
- else
+ } else {
return br2684_create(argp);
+ }
#ifdef CONFIG_ATM_BR2684_IPFILTER
case BR2684_SETFILT:
if (atmvcc->push != br2684_push)