119 	struct wmi_block *wblock;  in find_guid()  local
127 	list_for_each_entry(wblock, &wmi_block_list, list) {  in find_guid()
128 		if (guid_equal(&wblock->gblock.guid, &guid_input)) {  in find_guid()
130 				*out = wblock;  in find_guid()
149 static const void *find_guid_context(struct wmi_block *wblock,  in find_guid_context()  argument
159 		if (guid_parse_and_compare(id->guid_string, &wblock->gblock.guid))  in find_guid_context()
190 static acpi_status wmi_method_enable(struct wmi_block *wblock, bool enable)  in wmi_method_enable()  argument
197 	block = &wblock->gblock;  in wmi_method_enable()
198 	handle = wblock->acpi_device->handle;  in wmi_method_enable()
210 static inline void get_acpi_method_name(const struct wmi_block *wblock,  in get_acpi_method_name()  argument
214 	static_assert(ARRAY_SIZE(wblock->gblock.object_id) == 2);  in get_acpi_method_name()
219 	buffer[2] = wblock->gblock.object_id[0];  in get_acpi_method_name()
220 	buffer[3] = wblock->gblock.object_id[1];  in get_acpi_method_name()
224 static inline acpi_object_type get_param_acpi_type(const struct wmi_block *wblock)  in get_param_acpi_type()  argument
226 	if (wblock->gblock.flags & ACPI_WMI_STRING)  in get_param_acpi_type()
232 static acpi_status get_event_data(const struct wmi_block *wblock, struct acpi_buffer *out)  in get_event_data()  argument
237 			.value = wblock->gblock.notify_id,  in get_event_data()
245 	return acpi_evaluate_object(wblock->acpi_device->handle, "_WED", &input, out);  in get_event_data()
263 	struct wmi_block *wblock;  in set_required_buffer_size()  local
265 	wblock = container_of(wdev, struct wmi_block, dev);  in set_required_buffer_size()
266 	wblock->req_buf_size = length;  in set_required_buffer_size()
282 	struct wmi_block *wblock;  in wmi_instance_count()  local
285 	status = find_guid(guid_string, &wblock);  in wmi_instance_count()
293 	return wmidev_instance_count(&wblock->dev);  in wmi_instance_count()
307 	struct wmi_block *wblock = container_of(wdev, struct wmi_block, dev);  in wmidev_instance_count()  local
309 	return wblock->gblock.instance_count;  in wmidev_instance_count()
328 	struct wmi_block *wblock = NULL;  in wmi_evaluate_method()  local
331 	status = find_guid(guid_string, &wblock);  in wmi_evaluate_method()
335 	return wmidev_evaluate_method(&wblock->dev, instance, method_id,  in wmi_evaluate_method()
356 	struct wmi_block *wblock;  in wmidev_evaluate_method()  local
362 	wblock = container_of(wdev, struct wmi_block, dev);  in wmidev_evaluate_method()
363 	block = &wblock->gblock;  in wmidev_evaluate_method()
364 	handle = wblock->acpi_device->handle;  in wmidev_evaluate_method()
382 		params[2].type = get_param_acpi_type(wblock);  in wmidev_evaluate_method()
387 	get_acpi_method_name(wblock, 'M', method);  in wmidev_evaluate_method()
393 static acpi_status __query_block(struct wmi_block *wblock, u8 instance,  in __query_block()  argument
407 	block = &wblock->gblock;  in __query_block()
408 	handle = wblock->acpi_device->handle;  in __query_block()
422 	if (instance == 0 && test_bit(WMI_READ_TAKES_NO_ARGS, &wblock->flags))  in __query_block()
430 		get_acpi_method_name(wblock, 'C', wc_method);  in __query_block()
440 	get_acpi_method_name(wblock, 'Q', method);  in __query_block()
474 	struct wmi_block *wblock;  in wmi_query_block()  local
477 	status = find_guid(guid_string, &wblock);  in wmi_query_block()
481 	return __query_block(wblock, instance, out);  in wmi_query_block()
497 	struct wmi_block *wblock = container_of(wdev, struct wmi_block, dev);  in wmidev_block_query()  local
499 	if (ACPI_FAILURE(__query_block(wblock, instance, &out)))  in wmidev_block_query()
519 	struct wmi_block *wblock = NULL;  in wmi_set_block()  local
530 	status = find_guid(guid_string, &wblock);  in wmi_set_block()
534 	block = &wblock->gblock;  in wmi_set_block()
535 	handle = wblock->acpi_device->handle;  in wmi_set_block()
548 	params[1].type = get_param_acpi_type(wblock);  in wmi_set_block()
552 	get_acpi_method_name(wblock, 'S', method);  in wmi_set_block()
722 	struct wmi_block *wblock;  in wmi_get_event_data()  local
724 	list_for_each_entry(wblock, &wmi_block_list, list) {  in wmi_get_event_data()
725 		struct guid_block *gblock = &wblock->gblock;  in wmi_get_event_data()
728 			return get_event_data(wblock, out);  in wmi_get_event_data()
759 	struct wmi_block *wblock = NULL;  in wmi_get_acpi_device_uid()  local
762 	status = find_guid(guid_string, &wblock);  in wmi_get_acpi_device_uid()
766 	return acpi_device_uid(wblock->acpi_device);  in wmi_get_acpi_device_uid()
784 	struct wmi_block *wblock = dev_to_wblock(dev);  in modalias_show()  local
786 	return sysfs_emit(buf, "wmi:%pUL\n", &wblock->gblock.guid);  in modalias_show()
793 	struct wmi_block *wblock = dev_to_wblock(dev);  in guid_show()  local
795 	return sysfs_emit(buf, "%pUL\n", &wblock->gblock.guid);  in guid_show()
802 	struct wmi_block *wblock = dev_to_wblock(dev);  in instance_count_show()  local
804 	return sysfs_emit(buf, "%d\n", (int)wblock->gblock.instance_count);  in instance_count_show()
811 	struct wmi_block *wblock = dev_to_wblock(dev);  in expensive_show()  local
814 			  (wblock->gblock.flags & ACPI_WMI_EXPENSIVE) != 0);  in expensive_show()
830 	struct wmi_block *wblock = dev_to_wblock(dev);  in notify_id_show()  local
832 	return sysfs_emit(buf, "%02X\n", (unsigned int)wblock->gblock.notify_id);  in notify_id_show()
845 	struct wmi_block *wblock = dev_to_wblock(dev);  in object_id_show()  local
847 	return sysfs_emit(buf, "%c%c\n", wblock->gblock.object_id[0],  in object_id_show()
848 			  wblock->gblock.object_id[1]);  in object_id_show()
876 	const struct wmi_block *wblock = dev_to_wblock(dev);  in wmi_dev_uevent()  local
878 	if (add_uevent_var(env, "MODALIAS=wmi:%pUL", &wblock->gblock.guid))  in wmi_dev_uevent()
881 	if (add_uevent_var(env, "WMI_GUID=%pUL", &wblock->gblock.guid))  in wmi_dev_uevent()
889 	struct wmi_block *wblock = dev_to_wblock(dev);  in wmi_dev_release()  local
891 	kfree(wblock);  in wmi_dev_release()
897 	struct wmi_block *wblock = dev_to_wblock(dev);  in wmi_dev_match()  local
904 		if (guid_parse_and_compare(id->guid_string, &wblock->gblock.guid))  in wmi_dev_match()
915 	struct wmi_block *wblock;  in wmi_char_open()  local
918 	list_for_each_entry_safe(wblock, next, &wmi_block_list, list) {  in wmi_char_open()
919 		if (!wblock->dev.dev.driver)  in wmi_char_open()
921 		if (strcmp(driver_name, wblock->dev.dev.driver->name) == 0) {  in wmi_char_open()
922 			filp->private_data = wblock;  in wmi_char_open()
936 	struct wmi_block *wblock = filp->private_data;  in wmi_char_read()  local
939 				       &wblock->req_buf_size,  in wmi_char_read()
940 				       sizeof(wblock->req_buf_size));  in wmi_char_read()
947 	struct wmi_block *wblock = filp->private_data;  in wmi_ioctl()  local
956 	if (_IOC_NR(cmd) >= wblock->gblock.instance_count)  in wmi_ioctl()
959 	mutex_lock(&wblock->char_mutex);  in wmi_ioctl()
960 	buf = wblock->handler_data;  in wmi_ioctl()
962 		dev_dbg(&wblock->dev.dev, "Read length from user failed\n");  in wmi_ioctl()
967 	if (buf->length < wblock->req_buf_size) {  in wmi_ioctl()
968 		dev_err(&wblock->dev.dev,  in wmi_ioctl()
970 			buf->length, wblock->req_buf_size);  in wmi_ioctl()
975 	if (buf->length > wblock->req_buf_size)  in wmi_ioctl()
976 		dev_warn(&wblock->dev.dev,  in wmi_ioctl()
978 			buf->length, wblock->req_buf_size);  in wmi_ioctl()
981 	if (copy_from_user(buf, input, wblock->req_buf_size)) {  in wmi_ioctl()
982 		dev_dbg(&wblock->dev.dev, "Copy %llu from user failed\n",  in wmi_ioctl()
983 			wblock->req_buf_size);  in wmi_ioctl()
989 	wdriver = drv_to_wdrv(wblock->dev.dev.driver);  in wmi_ioctl()
994 	ret = wdriver->filter_callback(&wblock->dev, cmd, buf);  in wmi_ioctl()
1000 	if (copy_to_user(input, buf, wblock->req_buf_size)) {  in wmi_ioctl()
1001 		dev_dbg(&wblock->dev.dev, "Copy %llu to user failed\n",  in wmi_ioctl()
1002 			wblock->req_buf_size);  in wmi_ioctl()
1007 	mutex_unlock(&wblock->char_mutex);  in wmi_ioctl()
1021 	struct wmi_block *wblock = dev_to_wblock(dev);  in wmi_dev_probe()  local
1026 	if (ACPI_FAILURE(wmi_method_enable(wblock, true)))  in wmi_dev_probe()
1031 				find_guid_context(wblock, wdriver));  in wmi_dev_probe()
1039 		if (!wblock->req_buf_size) {  in wmi_dev_probe()
1040 			dev_err(&wblock->dev.dev,  in wmi_dev_probe()
1046 		wblock->handler_data = kmalloc(wblock->req_buf_size,  in wmi_dev_probe()
1048 		if (!wblock->handler_data) {  in wmi_dev_probe()
1058 		wblock->char_dev.minor = MISC_DYNAMIC_MINOR;  in wmi_dev_probe()
1059 		wblock->char_dev.name = buf;  in wmi_dev_probe()
1060 		wblock->char_dev.fops = &wmi_fops;  in wmi_dev_probe()
1061 		wblock->char_dev.mode = 0444;  in wmi_dev_probe()
1062 		ret = misc_register(&wblock->char_dev);  in wmi_dev_probe()
1070 	set_bit(WMI_PROBED, &wblock->flags);  in wmi_dev_probe()
1076 	kfree(wblock->handler_data);  in wmi_dev_probe()
1078 	if (ACPI_FAILURE(wmi_method_enable(wblock, false)))  in wmi_dev_probe()
1085 	struct wmi_block *wblock = dev_to_wblock(dev);  in wmi_dev_remove()  local
1088 	clear_bit(WMI_PROBED, &wblock->flags);  in wmi_dev_remove()
1091 		misc_deregister(&wblock->char_dev);  in wmi_dev_remove()
1092 		kfree(wblock->char_dev.name);  in wmi_dev_remove()
1093 		kfree(wblock->handler_data);  in wmi_dev_remove()
1099 	if (ACPI_FAILURE(wmi_method_enable(wblock, false)))  in wmi_dev_remove()
1140 	struct wmi_block *wblock;  in guid_count()  local
1143 	list_for_each_entry(wblock, &wmi_block_list, list) {  in guid_count()
1144 		if (guid_equal(&wblock->gblock.guid, guid))  in guid_count()
1152 			     struct wmi_block *wblock,  in wmi_create_device()  argument
1160 	if (wblock->gblock.flags & ACPI_WMI_EVENT) {  in wmi_create_device()
1161 		wblock->dev.dev.type = &wmi_type_event;  in wmi_create_device()
1165 	if (wblock->gblock.flags & ACPI_WMI_METHOD) {  in wmi_create_device()
1166 		wblock->dev.dev.type = &wmi_type_method;  in wmi_create_device()
1167 		mutex_init(&wblock->char_mutex);  in wmi_create_device()
1176 	get_acpi_method_name(wblock, 'Q', method);  in wmi_create_device()
1186 	wblock->dev.dev.type = &wmi_type_data;  in wmi_create_device()
1199 		set_bit(WMI_READ_TAKES_NO_ARGS, &wblock->flags);  in wmi_create_device()
1203 	get_acpi_method_name(wblock, 'S', method);  in wmi_create_device()
1207 		wblock->dev.setable = true;  in wmi_create_device()
1210 	wblock->dev.dev.bus = &wmi_bus_type;  in wmi_create_device()
1211 	wblock->dev.dev.parent = wmi_bus_dev;  in wmi_create_device()
1213 	count = guid_count(&wblock->gblock.guid);  in wmi_create_device()
1215 		dev_set_name(&wblock->dev.dev, "%pUL-%d", &wblock->gblock.guid, count);  in wmi_create_device()
1217 		dev_set_name(&wblock->dev.dev, "%pUL", &wblock->gblock.guid);  in wmi_create_device()
1219 	device_initialize(&wblock->dev.dev);  in wmi_create_device()
1226 	struct wmi_block *wblock, *next;  in wmi_free_devices()  local
1229 	list_for_each_entry_safe(wblock, next, &wmi_block_list, list) {  in wmi_free_devices()
1230 		if (wblock->acpi_device == device) {  in wmi_free_devices()
1231 			list_del(&wblock->list);  in wmi_free_devices()
1232 			device_unregister(&wblock->dev.dev);  in wmi_free_devices()
1239 	struct wmi_block *wblock;  in guid_already_parsed_for_legacy()  local
1241 	list_for_each_entry(wblock, &wmi_block_list, list) {  in guid_already_parsed_for_legacy()
1247 		if (guid_equal(&wblock->gblock.guid, guid)) {  in guid_already_parsed_for_legacy()
1255 				 guid, dev_name(&wblock->acpi_device->dev));  in guid_already_parsed_for_legacy()
1270 	struct wmi_block *wblock, *next;  in parse_wdg()  local
1299 		wblock = kzalloc(sizeof(*wblock), GFP_KERNEL);  in parse_wdg()
1300 		if (!wblock) {  in parse_wdg()
1305 		wblock->acpi_device = device;  in parse_wdg()
1306 		wblock->gblock = gblock[i];  in parse_wdg()
1308 		retval = wmi_create_device(wmi_bus_dev, wblock, device);  in parse_wdg()
1310 			kfree(wblock);  in parse_wdg()
1314 		list_add_tail(&wblock->list, &wmi_block_list);  in parse_wdg()
1317 			wblock->handler = wmi_notify_debug;  in parse_wdg()
1318 			wmi_method_enable(wblock, true);  in parse_wdg()
1326 	list_for_each_entry_safe(wblock, next, &wmi_block_list, list) {  in parse_wdg()
1327 		if (wblock->acpi_device != device)  in parse_wdg()
1330 		retval = device_add(&wblock->dev.dev);  in parse_wdg()
1333 				&wblock->gblock.guid);  in parse_wdg()
1335 				wmi_method_enable(wblock, false);  in parse_wdg()
1336 			list_del(&wblock->list);  in parse_wdg()
1337 			put_device(&wblock->dev.dev);  in parse_wdg()
1390 	struct wmi_block *wblock = NULL, *iter;  in acpi_wmi_notify_handler()  local
1398 			wblock = iter;  in acpi_wmi_notify_handler()
1403 	if (!wblock)  in acpi_wmi_notify_handler()
1407 	if (test_bit(WMI_PROBED, &wblock->flags) && wblock->dev.dev.driver) {  in acpi_wmi_notify_handler()
1408 		struct wmi_driver *driver = drv_to_wdrv(wblock->dev.dev.driver);  in acpi_wmi_notify_handler()
1413 			status = get_event_data(wblock, &evdata);  in acpi_wmi_notify_handler()
1415 				dev_warn(&wblock->dev.dev, "failed to get event data\n");  in acpi_wmi_notify_handler()
1421 			driver->notify(&wblock->dev, evdata.pointer);  in acpi_wmi_notify_handler()
1424 	} else if (wblock->handler) {  in acpi_wmi_notify_handler()
1426 		wblock->handler(event, wblock->handler_data);  in acpi_wmi_notify_handler()
1430 		pr_info("DEBUG: GUID %pUL event 0x%02X\n", &wblock->gblock.guid, event);  in acpi_wmi_notify_handler()
1433 		wblock->acpi_device->pnp.device_class,  in acpi_wmi_notify_handler()
1434 		dev_name(&wblock->dev.dev),  in acpi_wmi_notify_handler()