/* Functions for ioctl(ATMMPC_*) operations */
int atm_mpoa_mpoad_attach(struct atm_vcc *vcc, int arg);
-int atm_mpoa_vcc_attach(struct atm_vcc *vcc, long arg);
+int atm_mpoa_vcc_attach(struct atm_vcc *vcc, void __user *arg);
struct mpoa_client {
struct mpoa_client *next;