#define LEC_VCC_PRIV(vcc) ((struct lec_vcc_priv *)((vcc)->user_back))
int lecd_attach(struct atm_vcc *vcc, int arg);
-int lec_vcc_attach(struct atm_vcc *vcc, void *arg);
+int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg);
int lec_mcast_attach(struct atm_vcc *vcc, int arg);
struct net_device *get_dev_lec(int itf);
int make_lec(struct atm_vcc *vcc);