170 static int acpi_ec_query(struct acpi_ec *ec, u8 *data);
171 static void advance_transaction(struct acpi_ec *ec);
224 #define ec_dbg_ref(ec, fmt, ...) \  argument
225 	ec_dbg_raw("%lu: " fmt, ec->reference_count, ## __VA_ARGS__)
231 static bool acpi_ec_started(struct acpi_ec *ec)  in acpi_ec_started()  argument
233 	return test_bit(EC_FLAGS_STARTED, &ec->flags) &&  in acpi_ec_started()
234 	       !test_bit(EC_FLAGS_STOPPED, &ec->flags);  in acpi_ec_started()
237 static bool acpi_ec_flushed(struct acpi_ec *ec)  in acpi_ec_flushed()  argument
239 	return ec->reference_count == 1;  in acpi_ec_flushed()
246 static inline u8 acpi_ec_read_status(struct acpi_ec *ec)  in acpi_ec_read_status()  argument
248 	u8 x = inb(ec->command_addr);  in acpi_ec_read_status()
261 static inline u8 acpi_ec_read_data(struct acpi_ec *ec)  in acpi_ec_read_data()  argument
263 	u8 x = inb(ec->data_addr);  in acpi_ec_read_data()
265 	ec->timestamp = jiffies;  in acpi_ec_read_data()
270 static inline void acpi_ec_write_cmd(struct acpi_ec *ec, u8 command)  in acpi_ec_write_cmd()  argument
273 	outb(command, ec->command_addr);  in acpi_ec_write_cmd()
274 	ec->timestamp = jiffies;  in acpi_ec_write_cmd()
277 static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)  in acpi_ec_write_data()  argument
280 	outb(data, ec->data_addr);  in acpi_ec_write_data()
281 	ec->timestamp = jiffies;  in acpi_ec_write_data()
309 static inline bool acpi_ec_is_gpe_raised(struct acpi_ec *ec)  in acpi_ec_is_gpe_raised()  argument
313 	(void)acpi_get_gpe_status(NULL, ec->gpe, &gpe_status);  in acpi_ec_is_gpe_raised()
317 static inline void acpi_ec_enable_gpe(struct acpi_ec *ec, bool open)  in acpi_ec_enable_gpe()  argument
320 		acpi_enable_gpe(NULL, ec->gpe);  in acpi_ec_enable_gpe()
322 		BUG_ON(ec->reference_count < 1);  in acpi_ec_enable_gpe()
323 		acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);  in acpi_ec_enable_gpe()
325 	if (acpi_ec_is_gpe_raised(ec)) {  in acpi_ec_enable_gpe()
332 		advance_transaction(ec);  in acpi_ec_enable_gpe()
336 static inline void acpi_ec_disable_gpe(struct acpi_ec *ec, bool close)  in acpi_ec_disable_gpe()  argument
339 		acpi_disable_gpe(NULL, ec->gpe);  in acpi_ec_disable_gpe()
341 		BUG_ON(ec->reference_count < 1);  in acpi_ec_disable_gpe()
342 		acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);  in acpi_ec_disable_gpe()
346 static inline void acpi_ec_clear_gpe(struct acpi_ec *ec)  in acpi_ec_clear_gpe()  argument
358 	if (!acpi_ec_is_gpe_raised(ec))  in acpi_ec_clear_gpe()
360 	acpi_clear_gpe(NULL, ec->gpe);  in acpi_ec_clear_gpe()
367 static void acpi_ec_submit_request(struct acpi_ec *ec)  in acpi_ec_submit_request()  argument
369 	ec->reference_count++;  in acpi_ec_submit_request()
370 	if (ec->reference_count == 1)  in acpi_ec_submit_request()
371 		acpi_ec_enable_gpe(ec, true);  in acpi_ec_submit_request()
374 static void acpi_ec_complete_request(struct acpi_ec *ec)  in acpi_ec_complete_request()  argument
378 	ec->reference_count--;  in acpi_ec_complete_request()
379 	if (ec->reference_count == 0)  in acpi_ec_complete_request()
380 		acpi_ec_disable_gpe(ec, true);  in acpi_ec_complete_request()
381 	flushed = acpi_ec_flushed(ec);  in acpi_ec_complete_request()
383 		wake_up(&ec->wait);  in acpi_ec_complete_request()
386 static void acpi_ec_set_storm(struct acpi_ec *ec, u8 flag)  in acpi_ec_set_storm()  argument
388 	if (!test_bit(flag, &ec->flags)) {  in acpi_ec_set_storm()
389 		acpi_ec_disable_gpe(ec, false);  in acpi_ec_set_storm()
391 		set_bit(flag, &ec->flags);  in acpi_ec_set_storm()
395 static void acpi_ec_clear_storm(struct acpi_ec *ec, u8 flag)  in acpi_ec_clear_storm()  argument
397 	if (test_bit(flag, &ec->flags)) {  in acpi_ec_clear_storm()
398 		clear_bit(flag, &ec->flags);  in acpi_ec_clear_storm()
399 		acpi_ec_enable_gpe(ec, false);  in acpi_ec_clear_storm()
415 static bool acpi_ec_submit_flushable_request(struct acpi_ec *ec)  in acpi_ec_submit_flushable_request()  argument
417 	if (!acpi_ec_started(ec))  in acpi_ec_submit_flushable_request()
419 	acpi_ec_submit_request(ec);  in acpi_ec_submit_flushable_request()
423 static void acpi_ec_submit_query(struct acpi_ec *ec)  in acpi_ec_submit_query()  argument
425 	if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {  in acpi_ec_submit_query()
428 		ec->nr_pending_queries++;  in acpi_ec_submit_query()
429 		schedule_work(&ec->work);  in acpi_ec_submit_query()
433 static void acpi_ec_complete_query(struct acpi_ec *ec)  in acpi_ec_complete_query()  argument
435 	if (test_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) {  in acpi_ec_complete_query()
436 		clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);  in acpi_ec_complete_query()
442 static bool acpi_ec_guard_event(struct acpi_ec *ec)  in acpi_ec_guard_event()  argument
447 	spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_guard_event()
464 	    !test_bit(EC_FLAGS_QUERY_PENDING, &ec->flags) ||  in acpi_ec_guard_event()
465 	    (ec->curr && ec->curr->command == ACPI_EC_COMMAND_QUERY))  in acpi_ec_guard_event()
467 	spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_guard_event()
471 static int ec_transaction_polled(struct acpi_ec *ec)  in ec_transaction_polled()  argument
476 	spin_lock_irqsave(&ec->lock, flags);  in ec_transaction_polled()
477 	if (ec->curr && (ec->curr->flags & ACPI_EC_COMMAND_POLL))  in ec_transaction_polled()
479 	spin_unlock_irqrestore(&ec->lock, flags);  in ec_transaction_polled()
483 static int ec_transaction_completed(struct acpi_ec *ec)  in ec_transaction_completed()  argument
488 	spin_lock_irqsave(&ec->lock, flags);  in ec_transaction_completed()
489 	if (ec->curr && (ec->curr->flags & ACPI_EC_COMMAND_COMPLETE))  in ec_transaction_completed()
491 	spin_unlock_irqrestore(&ec->lock, flags);  in ec_transaction_completed()
495 static inline void ec_transaction_transition(struct acpi_ec *ec, unsigned long flag)  in ec_transaction_transition()  argument
497 	ec->curr->flags |= flag;  in ec_transaction_transition()
498 	if (ec->curr->command == ACPI_EC_COMMAND_QUERY) {  in ec_transaction_transition()
501 			acpi_ec_complete_query(ec);  in ec_transaction_transition()
504 			acpi_ec_complete_query(ec);  in ec_transaction_transition()
507 			set_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags);  in ec_transaction_transition()
511 static void advance_transaction(struct acpi_ec *ec)  in advance_transaction()  argument
524 	acpi_ec_clear_gpe(ec);  in advance_transaction()
525 	status = acpi_ec_read_status(ec);  in advance_transaction()
526 	t = ec->curr;  in advance_transaction()
533 		    (!ec->nr_pending_queries ||  in advance_transaction()
534 		     test_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags))) {  in advance_transaction()
535 			clear_bit(EC_FLAGS_QUERY_GUARDING, &ec->flags);  in advance_transaction()
536 			acpi_ec_complete_query(ec);  in advance_transaction()
544 				acpi_ec_write_data(ec, t->wdata[t->wi++]);  in advance_transaction()
549 				t->rdata[t->ri++] = acpi_ec_read_data(ec);  in advance_transaction()
551 					ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);  in advance_transaction()
561 			ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);  in advance_transaction()
569 			ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL);  in advance_transaction()
571 			ec_transaction_transition(ec, ACPI_EC_COMMAND_COMPLETE);  in advance_transaction()
576 			acpi_ec_write_cmd(ec, t->command);  in advance_transaction()
577 			ec_transaction_transition(ec, ACPI_EC_COMMAND_POLL);  in advance_transaction()
593 				acpi_ec_set_storm(ec, EC_FLAGS_COMMAND_STORM);  in advance_transaction()
598 		acpi_ec_submit_query(ec);  in advance_transaction()
600 		wake_up(&ec->wait);  in advance_transaction()
603 static void start_transaction(struct acpi_ec *ec)  in start_transaction()  argument
605 	ec->curr->irq_count = ec->curr->wi = ec->curr->ri = 0;  in start_transaction()
606 	ec->curr->flags = 0;  in start_transaction()
609 static int ec_guard(struct acpi_ec *ec)  in ec_guard()  argument
612 	unsigned long timeout = ec->timestamp + guard;  in ec_guard()
618 			if (ec_transaction_completed(ec))  in ec_guard()
632 			if (!ec_transaction_polled(ec) &&  in ec_guard()
633 			    !acpi_ec_guard_event(ec))  in ec_guard()
635 			if (wait_event_timeout(ec->wait,  in ec_guard()
636 					       ec_transaction_completed(ec),  in ec_guard()
644 static int ec_poll(struct acpi_ec *ec)  in ec_poll()  argument
653 			if (!ec_guard(ec))  in ec_poll()
655 			spin_lock_irqsave(&ec->lock, flags);  in ec_poll()
656 			advance_transaction(ec);  in ec_poll()
657 			spin_unlock_irqrestore(&ec->lock, flags);  in ec_poll()
660 		spin_lock_irqsave(&ec->lock, flags);  in ec_poll()
661 		start_transaction(ec);  in ec_poll()
662 		spin_unlock_irqrestore(&ec->lock, flags);  in ec_poll()
667 static int acpi_ec_transaction_unlocked(struct acpi_ec *ec,  in acpi_ec_transaction_unlocked()  argument
674 	spin_lock_irqsave(&ec->lock, tmp);  in acpi_ec_transaction_unlocked()
676 	if (!acpi_ec_submit_flushable_request(ec)) {  in acpi_ec_transaction_unlocked()
680 	ec_dbg_ref(ec, "Increase command");  in acpi_ec_transaction_unlocked()
682 	ec->curr = t;  in acpi_ec_transaction_unlocked()
684 	start_transaction(ec);  in acpi_ec_transaction_unlocked()
685 	spin_unlock_irqrestore(&ec->lock, tmp);  in acpi_ec_transaction_unlocked()
687 	ret = ec_poll(ec);  in acpi_ec_transaction_unlocked()
689 	spin_lock_irqsave(&ec->lock, tmp);  in acpi_ec_transaction_unlocked()
691 		acpi_ec_clear_storm(ec, EC_FLAGS_COMMAND_STORM);  in acpi_ec_transaction_unlocked()
693 	ec->curr = NULL;  in acpi_ec_transaction_unlocked()
695 	acpi_ec_complete_request(ec);  in acpi_ec_transaction_unlocked()
696 	ec_dbg_ref(ec, "Decrease command");  in acpi_ec_transaction_unlocked()
698 	spin_unlock_irqrestore(&ec->lock, tmp);  in acpi_ec_transaction_unlocked()
702 static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t)  in acpi_ec_transaction()  argument
707 	if (!ec || (!t) || (t->wlen && !t->wdata) || (t->rlen && !t->rdata))  in acpi_ec_transaction()
712 	mutex_lock(&ec->mutex);  in acpi_ec_transaction()
713 	if (ec->global_lock) {  in acpi_ec_transaction()
721 	status = acpi_ec_transaction_unlocked(ec, t);  in acpi_ec_transaction()
723 	if (ec->global_lock)  in acpi_ec_transaction()
726 	mutex_unlock(&ec->mutex);  in acpi_ec_transaction()
730 static int acpi_ec_burst_enable(struct acpi_ec *ec)  in acpi_ec_burst_enable()  argument
737 	return acpi_ec_transaction(ec, &t);  in acpi_ec_burst_enable()
740 static int acpi_ec_burst_disable(struct acpi_ec *ec)  in acpi_ec_burst_disable()  argument
746 	return (acpi_ec_read_status(ec) & ACPI_EC_FLAG_BURST) ?  in acpi_ec_burst_disable()
747 				acpi_ec_transaction(ec, &t) : 0;  in acpi_ec_burst_disable()
750 static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data)  in acpi_ec_read()  argument
758 	result = acpi_ec_transaction(ec, &t);  in acpi_ec_read()
763 static int acpi_ec_write(struct acpi_ec *ec, u8 address, u8 data)  in acpi_ec_write()  argument
770 	return acpi_ec_transaction(ec, &t);  in acpi_ec_write()
832 static void acpi_ec_clear(struct acpi_ec *ec)  in acpi_ec_clear()  argument
838 		status = acpi_ec_query(ec, &value);  in acpi_ec_clear()
849 static void acpi_ec_start(struct acpi_ec *ec, bool resuming)  in acpi_ec_start()  argument
853 	spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_start()
854 	if (!test_and_set_bit(EC_FLAGS_STARTED, &ec->flags)) {  in acpi_ec_start()
858 			acpi_ec_submit_request(ec);  in acpi_ec_start()
859 			ec_dbg_ref(ec, "Increase driver");  in acpi_ec_start()
863 	spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_start()
866 static bool acpi_ec_stopped(struct acpi_ec *ec)  in acpi_ec_stopped()  argument
871 	spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_stopped()
872 	flushed = acpi_ec_flushed(ec);  in acpi_ec_stopped()
873 	spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_stopped()
877 static void acpi_ec_stop(struct acpi_ec *ec, bool suspending)  in acpi_ec_stop()  argument
881 	spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_stop()
882 	if (acpi_ec_started(ec)) {  in acpi_ec_stop()
884 		set_bit(EC_FLAGS_STOPPED, &ec->flags);  in acpi_ec_stop()
885 		spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_stop()
886 		wait_event(ec->wait, acpi_ec_stopped(ec));  in acpi_ec_stop()
887 		spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_stop()
890 			acpi_ec_complete_request(ec);  in acpi_ec_stop()
891 			ec_dbg_ref(ec, "Decrease driver");  in acpi_ec_stop()
893 		clear_bit(EC_FLAGS_STARTED, &ec->flags);  in acpi_ec_stop()
894 		clear_bit(EC_FLAGS_STOPPED, &ec->flags);  in acpi_ec_stop()
897 	spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_stop()
902 	struct acpi_ec *ec = first_ec;  in acpi_ec_block_transactions()  local
904 	if (!ec)  in acpi_ec_block_transactions()
907 	mutex_lock(&ec->mutex);  in acpi_ec_block_transactions()
909 	acpi_ec_stop(ec, true);  in acpi_ec_block_transactions()
910 	mutex_unlock(&ec->mutex);  in acpi_ec_block_transactions()
915 	struct acpi_ec *ec = first_ec;  in acpi_ec_unblock_transactions()  local
917 	if (!ec)  in acpi_ec_unblock_transactions()
921 	acpi_ec_start(ec, true);  in acpi_ec_unblock_transactions()
924 		acpi_ec_clear(ec);  in acpi_ec_unblock_transactions()
949 acpi_ec_get_query_handler_by_value(struct acpi_ec *ec, u8 value)  in acpi_ec_get_query_handler_by_value()  argument
954 	mutex_lock(&ec->mutex);  in acpi_ec_get_query_handler_by_value()
955 	list_for_each_entry(handler, &ec->list, node) {  in acpi_ec_get_query_handler_by_value()
961 	mutex_unlock(&ec->mutex);  in acpi_ec_get_query_handler_by_value()
978 int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,  in acpi_ec_add_query_handler()  argument
992 	mutex_lock(&ec->mutex);  in acpi_ec_add_query_handler()
994 	list_add(&handler->node, &ec->list);  in acpi_ec_add_query_handler()
995 	mutex_unlock(&ec->mutex);  in acpi_ec_add_query_handler()
1000 static void acpi_ec_remove_query_handlers(struct acpi_ec *ec,  in acpi_ec_remove_query_handlers()  argument
1006 	mutex_lock(&ec->mutex);  in acpi_ec_remove_query_handlers()
1007 	list_for_each_entry_safe(handler, tmp, &ec->list, node) {  in acpi_ec_remove_query_handlers()
1013 	mutex_unlock(&ec->mutex);  in acpi_ec_remove_query_handlers()
1018 void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit)  in acpi_ec_remove_query_handler()  argument
1020 	acpi_ec_remove_query_handlers(ec, false, query_bit);  in acpi_ec_remove_query_handler()
1063 static int acpi_ec_query(struct acpi_ec *ec, u8 *data)  in acpi_ec_query()  argument
1078 	result = acpi_ec_transaction(ec, &q->transaction);  in acpi_ec_query()
1084 	q->handler = acpi_ec_get_query_handler_by_value(ec, value);  in acpi_ec_query()
1113 static void acpi_ec_check_event(struct acpi_ec *ec)  in acpi_ec_check_event()  argument
1118 		if (ec_guard(ec)) {  in acpi_ec_check_event()
1119 			spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_check_event()
1124 			if (!ec->curr)  in acpi_ec_check_event()
1125 				advance_transaction(ec);  in acpi_ec_check_event()
1126 			spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_check_event()
1134 	struct acpi_ec *ec = container_of(work, struct acpi_ec, work);  in acpi_ec_event_handler()  local
1138 	spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_event_handler()
1139 	while (ec->nr_pending_queries) {  in acpi_ec_event_handler()
1140 		spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_event_handler()
1141 		(void)acpi_ec_query(ec, NULL);  in acpi_ec_event_handler()
1142 		spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_event_handler()
1143 		ec->nr_pending_queries--;  in acpi_ec_event_handler()
1150 		if (!ec->nr_pending_queries) {  in acpi_ec_event_handler()
1153 				acpi_ec_complete_query(ec);  in acpi_ec_event_handler()
1156 	spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_event_handler()
1160 	acpi_ec_check_event(ec);  in acpi_ec_event_handler()
1167 	struct acpi_ec *ec = data;  in acpi_ec_gpe_handler()  local
1169 	spin_lock_irqsave(&ec->lock, flags);  in acpi_ec_gpe_handler()
1170 	advance_transaction(ec);  in acpi_ec_gpe_handler()
1171 	spin_unlock_irqrestore(&ec->lock, flags);  in acpi_ec_gpe_handler()
1184 	struct acpi_ec *ec = handler_context;  in acpi_ec_space_handler()  local
1195 		acpi_ec_burst_enable(ec);  in acpi_ec_space_handler()
1199 			acpi_ec_read(ec, address, value) :  in acpi_ec_space_handler()
1200 			acpi_ec_write(ec, address, *value);  in acpi_ec_space_handler()
1203 		acpi_ec_burst_disable(ec);  in acpi_ec_space_handler()
1226 	struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL);  in make_acpi_ec()  local
1228 	if (!ec)  in make_acpi_ec()
1230 	ec->flags = 1 << EC_FLAGS_QUERY_PENDING;  in make_acpi_ec()
1231 	mutex_init(&ec->mutex);  in make_acpi_ec()
1232 	init_waitqueue_head(&ec->wait);  in make_acpi_ec()
1233 	INIT_LIST_HEAD(&ec->list);  in make_acpi_ec()
1234 	spin_lock_init(&ec->lock);  in make_acpi_ec()
1235 	INIT_WORK(&ec->work, acpi_ec_event_handler);  in make_acpi_ec()
1236 	ec->timestamp = jiffies;  in make_acpi_ec()
1237 	return ec;  in make_acpi_ec()
1246 	struct acpi_ec *ec = context;  in acpi_ec_register_query_methods()  local
1253 		acpi_ec_add_query_handler(ec, value, handle, NULL, NULL);  in acpi_ec_register_query_methods()
1262 	struct acpi_ec *ec = context;  in ec_parse_device()  local
1265 	ec->command_addr = ec->data_addr = 0;  in ec_parse_device()
1268 				     ec_parse_io_ports, ec);  in ec_parse_device()
1277 	ec->gpe = tmp;  in ec_parse_device()
1281 	ec->global_lock = tmp;  in ec_parse_device()
1282 	ec->handle = handle;  in ec_parse_device()
1286 static int ec_install_handlers(struct acpi_ec *ec)  in ec_install_handlers()  argument
1290 	if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))  in ec_install_handlers()
1292 	status = acpi_install_gpe_raw_handler(NULL, ec->gpe,  in ec_install_handlers()
1294 				  &acpi_ec_gpe_handler, ec);  in ec_install_handlers()
1298 	acpi_ec_start(ec, false);  in ec_install_handlers()
1299 	status = acpi_install_address_space_handler(ec->handle,  in ec_install_handlers()
1302 						    NULL, ec);  in ec_install_handlers()
1313 			acpi_ec_stop(ec, false);  in ec_install_handlers()
1314 			acpi_remove_gpe_handler(NULL, ec->gpe,  in ec_install_handlers()
1320 	set_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags);  in ec_install_handlers()
1324 static void ec_remove_handlers(struct acpi_ec *ec)  in ec_remove_handlers()  argument
1326 	if (!test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags))  in ec_remove_handlers()
1328 	acpi_ec_stop(ec, false);  in ec_remove_handlers()
1329 	if (ACPI_FAILURE(acpi_remove_address_space_handler(ec->handle,  in ec_remove_handlers()
1332 	if (ACPI_FAILURE(acpi_remove_gpe_handler(NULL, ec->gpe,  in ec_remove_handlers()
1335 	clear_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags);  in ec_remove_handlers()
1340 	struct acpi_ec *ec = NULL;  in acpi_ec_add()  local
1350 		ec = boot_ec;  in acpi_ec_add()
1353 		ec = make_acpi_ec();  in acpi_ec_add()
1354 		if (!ec)  in acpi_ec_add()
1357 	if (ec_parse_device(device->handle, 0, ec, NULL) !=  in acpi_ec_add()
1359 			kfree(ec);  in acpi_ec_add()
1364 	acpi_walk_namespace(ACPI_TYPE_METHOD, ec->handle, 1,  in acpi_ec_add()
1365 			    acpi_ec_register_query_methods, NULL, ec, NULL);  in acpi_ec_add()
1368 		first_ec = ec;  in acpi_ec_add()
1369 	device->driver_data = ec;  in acpi_ec_add()
1371 	ret = !!request_region(ec->data_addr, 1, "EC data");  in acpi_ec_add()
1372 	WARN(!ret, "Could not request EC data io port 0x%lx", ec->data_addr);  in acpi_ec_add()
1373 	ret = !!request_region(ec->command_addr, 1, "EC cmd");  in acpi_ec_add()
1374 	WARN(!ret, "Could not request EC cmd io port 0x%lx", ec->command_addr);  in acpi_ec_add()
1377 			  ec->gpe, ec->command_addr, ec->data_addr);  in acpi_ec_add()
1379 	ret = ec_install_handlers(ec);  in acpi_ec_add()
1382 	acpi_walk_dep_device_list(ec->handle);  in acpi_ec_add()
1385 	clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags);  in acpi_ec_add()
1389 		acpi_ec_clear(ec);  in acpi_ec_add()
1395 	struct acpi_ec *ec;  in acpi_ec_remove()  local
1400 	ec = acpi_driver_data(device);  in acpi_ec_remove()
1401 	ec_remove_handlers(ec);  in acpi_ec_remove()
1402 	acpi_ec_remove_query_handlers(ec, true, 0);  in acpi_ec_remove()
1403 	release_region(ec->data_addr, 1);  in acpi_ec_remove()
1404 	release_region(ec->command_addr, 1);  in acpi_ec_remove()
1406 	if (ec == first_ec)  in acpi_ec_remove()
1408 	kfree(ec);  in acpi_ec_remove()
1415 	struct acpi_ec *ec = context;  in ec_parse_io_ports()  local
1425 	if (ec->data_addr == 0)  in ec_parse_io_ports()
1426 		ec->data_addr = resource->data.io.minimum;  in ec_parse_io_ports()
1427 	else if (ec->command_addr == 0)  in ec_parse_io_ports()
1428 		ec->command_addr = resource->data.io.minimum;  in ec_parse_io_ports()