compat_dtv_properties
#define COMPAT_FE_SET_PROPERTY _IOW('o', 82, struct compat_dtv_properties)
#define COMPAT_FE_GET_PROPERTY _IOR('o', 83, struct compat_dtv_properties)
struct compat_dtv_properties prop, *tvps = NULL;
struct compat_dtv_properties prop, *tvps = NULL;