u16 capi20_get_version(u32 contr, struct capi_version *verp);
u16 capi20_get_serial(u32 contr, u8 serial[CAPI_SERIAL_LEN]);
u16 capi20_get_profile(u32 contr, struct capi_profile *profp);
-int capi20_manufacturer(unsigned int cmd, void *data);
+int capi20_manufacturer(unsigned int cmd, void __user *data);
/* temporary hack XXX */
void capi20_set_callback(struct capi20_appl *ap,