diff --git a/net/atm/common.h b/net/atm/common.h
index 16f32c1..92e2981 100644
--- a/net/atm/common.h
+++ b/net/atm/common.h
@@ -19,6 +19,7 @@
 		size_t total_len);
 unsigned int vcc_poll(struct file *file, struct socket *sock, poll_table *wait);
 int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
+int vcc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
 int vcc_setsockopt(struct socket *sock, int level, int optname,
 		   char __user *optval, int optlen);
 int vcc_getsockopt(struct socket *sock, int level, int optname,