126  * Return negative errno code on error; return zero when success.
172 	int error;  in cyapa_get_state()  local
182 	error = cyapa_i2c_reg_read_block(cyapa, BL_HEAD_OFFSET, BL_STATUS_SIZE,  in cyapa_get_state()
190 	if (cyapa->smbus && (error == -ETIMEDOUT || error == -ENXIO)) {  in cyapa_get_state()
192 			error = cyapa_read_block(cyapa,  in cyapa_get_state()
197 	if (error != BL_STATUS_SIZE)  in cyapa_get_state()
198 		goto error;  in cyapa_get_state()
210 			error = cyapa_gen3_ops.state_parse(cyapa,  in cyapa_get_state()
212 			if (!error)  in cyapa_get_state()
218 			error = cyapa_pip_state_parse(cyapa,  in cyapa_get_state()
220 			if (!error)  in cyapa_get_state()
227 			error = cyapa_gen5_ops.state_parse(cyapa,  in cyapa_get_state()
229 			if (!error)  in cyapa_get_state()
240 			error = cyapa_i2c_write(cyapa, 0, 2, cmd);  in cyapa_get_state()
241 			if (error)  in cyapa_get_state()
242 				goto error;  in cyapa_get_state()
246 			error = cyapa_i2c_read(cyapa, BL_HEAD_OFFSET,  in cyapa_get_state()
248 			if (error)  in cyapa_get_state()
249 				goto error;  in cyapa_get_state()
253 	goto error;  in cyapa_get_state()
260 error:  in cyapa_get_state()
261 	return (error < 0) ? error : -EAGAIN;  in cyapa_get_state()
281 	int error;  in cyapa_poll_state()  local
285 		error = cyapa_get_state(cyapa);  in cyapa_poll_state()
286 		if (!error && cyapa->state > CYAPA_STATE_BL_BUSY)  in cyapa_poll_state()
292 	return (error == -EAGAIN || error == -ETIMEDOUT) ? -ETIMEDOUT : error;  in cyapa_poll_state()
313 	int error;  in cyapa_check_is_operational()  local
315 	error = cyapa_poll_state(cyapa, 4000);  in cyapa_check_is_operational()
316 	if (error)  in cyapa_check_is_operational()
317 		return error;  in cyapa_check_is_operational()
333 	error = cyapa->ops->operational_check(cyapa);  in cyapa_check_is_operational()
334 	if (!error && cyapa_is_operational_mode(cyapa))  in cyapa_check_is_operational()
339 	return error;  in cyapa_check_is_operational()
351 	int error;  in cyapa_detect()  local
353 	error = cyapa_check_is_operational(cyapa);  in cyapa_detect()
354 	if (error) {  in cyapa_detect()
355 		if (error != -ETIMEDOUT && error != -ENODEV &&  in cyapa_detect()
361 		dev_err(dev, "no device detected: %d\n", error);  in cyapa_detect()
362 		return error;  in cyapa_detect()
373 	int error;  in cyapa_open()  local
375 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_open()
376 	if (error)  in cyapa_open()
377 		return error;  in cyapa_open()
385 		error = cyapa->ops->set_power_mode(cyapa,  in cyapa_open()
387 		if (error) {  in cyapa_open()
388 			dev_warn(dev, "set active power failed: %d\n", error);  in cyapa_open()
392 		error = cyapa_reinitialize(cyapa);  in cyapa_open()
393 		if (error || !cyapa->operational) {  in cyapa_open()
394 			error = error ? error : -EAGAIN;  in cyapa_open()
409 	return error;  in cyapa_open()
436 	int error;  in cyapa_create_input_dev()  local
506 	error = input_mt_init_slots(input, CYAPA_MAX_MT_SLOTS,  in cyapa_create_input_dev()
508 	if (error) {  in cyapa_create_input_dev()
509 		dev_err(dev, "failed to initialize MT slots: %d\n", error);  in cyapa_create_input_dev()
510 		return error;  in cyapa_create_input_dev()
514 	error = input_register_device(input);  in cyapa_create_input_dev()
515 	if (error) {  in cyapa_create_input_dev()
516 		dev_err(dev, "failed to register input device: %d\n", error);  in cyapa_create_input_dev()
517 		return error;  in cyapa_create_input_dev()
591 	int error = 0;  in cyapa_initialize()  local
606 	error = cyapa_gen3_ops.initialize(cyapa);  in cyapa_initialize()
607 	if (!error)  in cyapa_initialize()
608 		error = cyapa_gen5_ops.initialize(cyapa);  in cyapa_initialize()
609 	if (!error)  in cyapa_initialize()
610 		error = cyapa_gen6_ops.initialize(cyapa);  in cyapa_initialize()
611 	if (error)  in cyapa_initialize()
612 		return error;  in cyapa_initialize()
614 	error = cyapa_detect(cyapa);  in cyapa_initialize()
615 	if (error)  in cyapa_initialize()
616 		return error;  in cyapa_initialize()
630 	int error;  in cyapa_reinitialize()  local
640 	error = cyapa_detect(cyapa);  in cyapa_reinitialize()
641 	if (error)  in cyapa_reinitialize()
645 		error = cyapa_create_input_dev(cyapa);  in cyapa_reinitialize()
646 		if (error) {  in cyapa_reinitialize()
648 					error);  in cyapa_reinitialize()
659 	} else if (!error && cyapa->operational) {  in cyapa_reinitialize()
671 	return error;  in cyapa_reinitialize()
678 	int error;  in cyapa_irq()  local
699 			error = cyapa->ops->irq_handler(cyapa);  in cyapa_irq()
714 		if (!cyapa->operational || error) {  in cyapa_irq()
743 	int error;  in cyapa_show_suspend_scanrate()  local
745 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_show_suspend_scanrate()
746 	if (error)  in cyapa_show_suspend_scanrate()
747 		return error;  in cyapa_show_suspend_scanrate()
780 	int error;  in cyapa_update_suspend_scanrate()  local
782 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_update_suspend_scanrate()
783 	if (error)  in cyapa_update_suspend_scanrate()
784 		return error;  in cyapa_update_suspend_scanrate()
829 	int error;  in cyapa_prepare_wakeup_controls()  local
832 		error = sysfs_merge_group(&dev->kobj,  in cyapa_prepare_wakeup_controls()
834 		if (error) {  in cyapa_prepare_wakeup_controls()
836 				error);  in cyapa_prepare_wakeup_controls()
837 			return error;  in cyapa_prepare_wakeup_controls()
840 		error = devm_add_action_or_reset(dev,  in cyapa_prepare_wakeup_controls()
842 		if (error) {  in cyapa_prepare_wakeup_controls()
844 				error);  in cyapa_prepare_wakeup_controls()
845 			return error;  in cyapa_prepare_wakeup_controls()
866 	int error;  in cyapa_show_rt_suspend_scanrate()  local
868 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_show_rt_suspend_scanrate()
869 	if (error)  in cyapa_show_rt_suspend_scanrate()
870 		return error;  in cyapa_show_rt_suspend_scanrate()
889 	int error;  in cyapa_update_rt_suspend_scanrate()  local
903 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_update_rt_suspend_scanrate()
904 	if (error)  in cyapa_update_rt_suspend_scanrate()
905 		return error;  in cyapa_update_rt_suspend_scanrate()
943 	int error;  in cyapa_start_runtime()  local
949 	error = sysfs_merge_group(&dev->kobj, &cyapa_power_runtime_group);  in cyapa_start_runtime()
950 	if (error) {  in cyapa_start_runtime()
952 			"failed to create power runtime group: %d\n", error);  in cyapa_start_runtime()
953 		return error;  in cyapa_start_runtime()
956 	error = devm_add_action_or_reset(dev, cyapa_remove_power_runtime_group,  in cyapa_start_runtime()
958 	if (error) {  in cyapa_start_runtime()
961 			error);  in cyapa_start_runtime()
962 		return error;  in cyapa_start_runtime()
982 	int error;  in cyapa_show_fm_ver()  local
985 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_show_fm_ver()
986 	if (error)  in cyapa_show_fm_ver()
987 		return error;  in cyapa_show_fm_ver()
988 	error = sysfs_emit(buf, "%d.%d\n",  in cyapa_show_fm_ver()
991 	return error;  in cyapa_show_fm_ver()
999 	int error;  in cyapa_show_product_id()  local
1001 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_show_product_id()
1002 	if (error)  in cyapa_show_product_id()
1003 		return error;  in cyapa_show_product_id()
1013 	int error;  in cyapa_firmware()  local
1015 	error = request_firmware(&fw, fw_name, dev);  in cyapa_firmware()
1016 	if (error) {  in cyapa_firmware()
1018 			fw_name, error);  in cyapa_firmware()
1019 		return error;  in cyapa_firmware()
1022 	error = cyapa->ops->check_fw(cyapa, fw);  in cyapa_firmware()
1023 	if (error) {  in cyapa_firmware()
1039 	error = cyapa->ops->bl_enter(cyapa);  in cyapa_firmware()
1040 	if (error) {  in cyapa_firmware()
1041 		dev_err(dev, "bl_enter failed, %d\n", error);  in cyapa_firmware()
1045 	error = cyapa->ops->bl_activate(cyapa);  in cyapa_firmware()
1046 	if (error) {  in cyapa_firmware()
1047 		dev_err(dev, "bl_activate failed, %d\n", error);  in cyapa_firmware()
1051 	error = cyapa->ops->bl_initiate(cyapa, fw);  in cyapa_firmware()
1052 	if (error) {  in cyapa_firmware()
1053 		dev_err(dev, "bl_initiate failed, %d\n", error);  in cyapa_firmware()
1057 	error = cyapa->ops->update_fw(cyapa, fw);  in cyapa_firmware()
1058 	if (error) {  in cyapa_firmware()
1059 		dev_err(dev, "update_fw failed, %d\n", error);  in cyapa_firmware()
1069 	return error;  in cyapa_firmware()
1078 	int ret, error;  in cyapa_update_fw_store()  local
1101 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_update_fw_store()
1102 	if (error) {  in cyapa_update_fw_store()
1108 		return error;  in cyapa_update_fw_store()
1111 	error = cyapa_firmware(cyapa, fw_name);  in cyapa_update_fw_store()
1112 	if (error)  in cyapa_update_fw_store()
1113 		dev_err(dev, "firmware update failed: %d\n", error);  in cyapa_update_fw_store()
1124 		error = error ? error : ret;  in cyapa_update_fw_store()
1129 	return error ? error : count;  in cyapa_update_fw_store()
1137 	int error;  in cyapa_calibrate_store()  local
1139 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_calibrate_store()
1140 	if (error)  in cyapa_calibrate_store()
1141 		return error;  in cyapa_calibrate_store()
1145 		error = cyapa->ops->calibrate_store(dev, attr, buf, count);  in cyapa_calibrate_store()
1148 		error = -EBUSY;  /* Still running in bootloader mode. */  in cyapa_calibrate_store()
1152 	return error < 0 ? error : count;  in cyapa_calibrate_store()
1159 	ssize_t error;  in cyapa_show_baseline()  local
1161 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_show_baseline()
1162 	if (error)  in cyapa_show_baseline()
1163 		return error;  in cyapa_show_baseline()
1167 		error = cyapa->ops->show_baseline(dev, attr, buf);  in cyapa_show_baseline()
1170 		error = -EBUSY;  /* Still running in bootloader mode. */  in cyapa_show_baseline()
1174 	return error;  in cyapa_show_baseline()
1203 	int error;  in cyapa_show_mode()  local
1205 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_show_mode()
1206 	if (error)  in cyapa_show_mode()
1207 		return error;  in cyapa_show_mode()
1247 	int error;  in cyapa_probe()  local
1275 		error = PTR_ERR(cyapa->vcc);  in cyapa_probe()
1276 		dev_err(dev, "failed to get vcc regulator: %d\n", error);  in cyapa_probe()
1277 		return error;  in cyapa_probe()
1280 	error = regulator_enable(cyapa->vcc);  in cyapa_probe()
1281 	if (error) {  in cyapa_probe()
1282 		dev_err(dev, "failed to enable regulator: %d\n", error);  in cyapa_probe()
1283 		return error;  in cyapa_probe()
1286 	error = devm_add_action_or_reset(dev, cyapa_disable_regulator, cyapa);  in cyapa_probe()
1287 	if (error) {  in cyapa_probe()
1289 			error);  in cyapa_probe()
1290 		return error;  in cyapa_probe()
1293 	error = cyapa_initialize(cyapa);  in cyapa_probe()
1294 	if (error) {  in cyapa_probe()
1296 		return error;  in cyapa_probe()
1299 	error = cyapa_prepare_wakeup_controls(cyapa);  in cyapa_probe()
1300 	if (error) {  in cyapa_probe()
1301 		dev_err(dev, "failed to prepare wakeup controls: %d\n", error);  in cyapa_probe()
1302 		return error;  in cyapa_probe()
1305 	error = cyapa_start_runtime(cyapa);  in cyapa_probe()
1306 	if (error) {  in cyapa_probe()
1307 		dev_err(dev, "failed to start pm_runtime: %d\n", error);  in cyapa_probe()
1308 		return error;  in cyapa_probe()
1311 	error = devm_request_threaded_irq(dev, client->irq,  in cyapa_probe()
1315 	if (error) {  in cyapa_probe()
1316 		dev_err(dev, "failed to request threaded irq: %d\n", error);  in cyapa_probe()
1317 		return error;  in cyapa_probe()
1329 		error = cyapa_create_input_dev(cyapa);  in cyapa_probe()
1330 		if (error) {  in cyapa_probe()
1332 					error);  in cyapa_probe()
1333 			return error;  in cyapa_probe()
1345 	int error;  in cyapa_suspend()  local
1347 	error = mutex_lock_interruptible(&cyapa->input->mutex);  in cyapa_suspend()
1348 	if (error)  in cyapa_suspend()
1349 		return error;  in cyapa_suspend()
1351 	error = mutex_lock_interruptible(&cyapa->state_sync_lock);  in cyapa_suspend()
1352 	if (error) {  in cyapa_suspend()
1354 		return error;  in cyapa_suspend()
1373 		error = cyapa->ops->set_power_mode(cyapa, power_mode,  in cyapa_suspend()
1375 		if (error)  in cyapa_suspend()
1377 					error);  in cyapa_suspend()
1400 	int error;  in cyapa_resume()  local
1414 	error = cyapa_reinitialize(cyapa);  in cyapa_resume()
1415 	if (error)  in cyapa_resume()
1416 		dev_warn(dev, "failed to reinitialize TP device: %d\n", error);  in cyapa_resume()
1428 	int error;  in cyapa_runtime_suspend()  local
1430 	error = cyapa->ops->set_power_mode(cyapa,  in cyapa_runtime_suspend()
1434 	if (error)  in cyapa_runtime_suspend()
1435 		dev_warn(dev, "runtime suspend failed: %d\n", error);  in cyapa_runtime_suspend()
1443 	int error;  in cyapa_runtime_resume()  local
1445 	error = cyapa->ops->set_power_mode(cyapa,  in cyapa_runtime_resume()
1447 	if (error)  in cyapa_runtime_resume()
1448 		dev_warn(dev, "runtime resume failed: %d\n", error);  in cyapa_runtime_resume()