42 	struct input_mt *mt = dev->mt;  in input_mt_init_slots()  local
47 	if (mt)  in input_mt_init_slots()
48 		return mt->num_slots != num_slots ? -EINVAL : 0;  in input_mt_init_slots()
53 	mt = kzalloc(struct_size(mt, slots, num_slots), GFP_KERNEL);  in input_mt_init_slots()
54 	if (!mt)  in input_mt_init_slots()
57 	mt->num_slots = num_slots;  in input_mt_init_slots()
58 	mt->flags = flags;  in input_mt_init_slots()
87 		mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL);  in input_mt_init_slots()
88 		if (!mt->red)  in input_mt_init_slots()
94 		input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1);  in input_mt_init_slots()
97 	mt->frame = 1;  in input_mt_init_slots()
99 	dev->mt = mt;  in input_mt_init_slots()
102 	kfree(mt);  in input_mt_init_slots()
116 	if (dev->mt) {  in input_mt_destroy_slots()
117 		kfree(dev->mt->red);  in input_mt_destroy_slots()
118 		kfree(dev->mt);  in input_mt_destroy_slots()
120 	dev->mt = NULL;  in input_mt_destroy_slots()
141 	struct input_mt *mt = dev->mt;  in input_mt_report_slot_state()  local
145 	if (!mt)  in input_mt_report_slot_state()
148 	slot = &mt->slots[mt->slot];  in input_mt_report_slot_state()
149 	slot->frame = mt->frame;  in input_mt_report_slot_state()
158 		id = input_mt_new_trkid(mt);  in input_mt_report_slot_state()
201 	struct input_mt *mt = dev->mt;  in input_mt_report_pointer_emulation()  local
205 	if (!mt)  in input_mt_report_pointer_emulation()
209 	oldid = mt->trkid;  in input_mt_report_pointer_emulation()
212 	for (i = 0; i < mt->num_slots; ++i) {  in input_mt_report_pointer_emulation()
213 		struct input_mt_slot *ps = &mt->slots[i];  in input_mt_report_pointer_emulation()
262 static void __input_mt_drop_unused(struct input_dev *dev, struct input_mt *mt)  in __input_mt_drop_unused()  argument
268 	for (i = 0; i < mt->num_slots; i++) {  in __input_mt_drop_unused()
269 		if (input_mt_is_active(&mt->slots[i]) &&  in __input_mt_drop_unused()
270 		    !input_mt_is_used(mt, &mt->slots[i])) {  in __input_mt_drop_unused()
285 	struct input_mt *mt = dev->mt;  in input_mt_drop_unused()  local
287 	if (mt) {  in input_mt_drop_unused()
292 		__input_mt_drop_unused(dev, mt);  in input_mt_drop_unused()
293 		mt->frame++;  in input_mt_drop_unused()
308 	struct input_mt *mt = dev->mt;  in input_mt_release_slots()  local
312 	if (mt) {  in input_mt_release_slots()
314 		mt->frame++;  in input_mt_release_slots()
316 		__input_mt_drop_unused(dev, mt);  in input_mt_release_slots()
321 		mt->frame++;  in input_mt_release_slots()
335 	struct input_mt *mt = dev->mt;  in input_mt_sync_frame()  local
338 	if (!mt)  in input_mt_sync_frame()
341 	if (mt->flags & INPUT_MT_DROP_UNUSED) {  in input_mt_sync_frame()
345 		__input_mt_drop_unused(dev, mt);  in input_mt_sync_frame()
349 	if ((mt->flags & INPUT_MT_POINTER) && !(mt->flags & INPUT_MT_SEMI_MT))  in input_mt_sync_frame()
354 	mt->frame++;  in input_mt_sync_frame()
406 static int input_mt_set_matrix(struct input_mt *mt,  in input_mt_set_matrix()  argument
412 	int *w = mt->red;  in input_mt_set_matrix()
415 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {  in input_mt_set_matrix()
426 	return w - mt->red;  in input_mt_set_matrix()
429 static void input_mt_set_slots(struct input_mt *mt,  in input_mt_set_slots()  argument
433 	int *w = mt->red, j;  in input_mt_set_slots()
438 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {  in input_mt_set_slots()
444 				slots[j] = s - mt->slots;  in input_mt_set_slots()
452 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++) {  in input_mt_set_slots()
458 				slots[j] = s - mt->slots;  in input_mt_set_slots()
487 	struct input_mt *mt = dev->mt;  in input_mt_assign_slots()  local
491 	if (!mt || !mt->red)  in input_mt_assign_slots()
493 	if (num_pos > mt->num_slots)  in input_mt_assign_slots()
498 	nrc = input_mt_set_matrix(mt, pos, num_pos, mu);  in input_mt_assign_slots()
499 	find_reduced_matrix(mt->red, num_pos, nrc / num_pos, nrc, mu);  in input_mt_assign_slots()
500 	input_mt_set_slots(mt, slots, num_pos);  in input_mt_assign_slots()
520 	struct input_mt *mt = dev->mt;  in input_mt_get_slot_by_key()  local
523 	if (!mt)  in input_mt_get_slot_by_key()
526 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++)  in input_mt_get_slot_by_key()
528 			return s - mt->slots;  in input_mt_get_slot_by_key()
530 	for (s = mt->slots; s != mt->slots + mt->num_slots; s++)  in input_mt_get_slot_by_key()
531 		if (!input_mt_is_active(s) && !input_mt_is_used(mt, s)) {  in input_mt_get_slot_by_key()
533 			return s - mt->slots;  in input_mt_get_slot_by_key()