235 		if (old->u.periodic.envelope.attack_length != effect->u.periodic.envelope.attack_length  in need_envelope_modifier()
236 		|| old->u.periodic.envelope.attack_level != effect->u.periodic.envelope.attack_level  in need_envelope_modifier()
237 		|| old->u.periodic.envelope.fade_length != effect->u.periodic.envelope.fade_length  in need_envelope_modifier()
238 		|| old->u.periodic.envelope.fade_level != effect->u.periodic.envelope.fade_level)  in need_envelope_modifier()
251  * Analyse the changes in an effect, and tell if we need to send a periodic
262 	return (old->u.periodic.period != new->u.periodic.period  in need_period_modifier()
263 		|| old->u.periodic.magnitude != new->u.periodic.magnitude  in need_period_modifier()
264 		|| old->u.periodic.offset != new->u.periodic.offset  in need_period_modifier()
265 		|| old->u.periodic.phase != new->u.periodic.phase);  in need_period_modifier()
331  * Upload a periodic effect to the device
348 			effect->u.periodic.magnitude, effect->u.periodic.offset,  in iforce_upload_periodic()
349 			effect->u.periodic.period, effect->u.periodic.phase);  in iforce_upload_periodic()
358 			effect->u.periodic.envelope.attack_length,  in iforce_upload_periodic()
359 			effect->u.periodic.envelope.attack_level,  in iforce_upload_periodic()
360 			effect->u.periodic.envelope.fade_length,  in iforce_upload_periodic()
361 			effect->u.periodic.envelope.fade_level);  in iforce_upload_periodic()
367 	switch (effect->u.periodic.waveform) {  in iforce_upload_periodic()