239 		if (old->u.periodic.envelope.attack_length != effect->u.periodic.envelope.attack_length  in need_envelope_modifier()
240 		|| old->u.periodic.envelope.attack_level != effect->u.periodic.envelope.attack_level  in need_envelope_modifier()
241 		|| old->u.periodic.envelope.fade_length != effect->u.periodic.envelope.fade_length  in need_envelope_modifier()
242 		|| old->u.periodic.envelope.fade_level != effect->u.periodic.envelope.fade_level)  in need_envelope_modifier()
255  * Analyse the changes in an effect, and tell if we need to send a periodic
266 	return (old->u.periodic.period != new->u.periodic.period  in need_period_modifier()
267 		|| old->u.periodic.magnitude != new->u.periodic.magnitude  in need_period_modifier()
268 		|| old->u.periodic.offset != new->u.periodic.offset  in need_period_modifier()
269 		|| old->u.periodic.phase != new->u.periodic.phase);  in need_period_modifier()
335  * Upload a periodic effect to the device
352 			effect->u.periodic.magnitude, effect->u.periodic.offset,  in iforce_upload_periodic()
353 			effect->u.periodic.period, effect->u.periodic.phase);  in iforce_upload_periodic()
362 			effect->u.periodic.envelope.attack_length,  in iforce_upload_periodic()
363 			effect->u.periodic.envelope.attack_level,  in iforce_upload_periodic()
364 			effect->u.periodic.envelope.fade_length,  in iforce_upload_periodic()
365 			effect->u.periodic.envelope.fade_level);  in iforce_upload_periodic()
371 	switch (effect->u.periodic.waveform) {  in iforce_upload_periodic()