48 	struct hidraw_list *list = file->private_data;  in hidraw_read()  local
52 	mutex_lock(&list->read_mutex);  in hidraw_read()
55 		if (list->head == list->tail) {  in hidraw_read()
56 			add_wait_queue(&list->hidraw->wait, &wait);  in hidraw_read()
59 			while (list->head == list->tail) {  in hidraw_read()
64 				if (!list->hidraw->exist) {  in hidraw_read()
74 				mutex_unlock(&list->read_mutex);  in hidraw_read()
76 				mutex_lock(&list->read_mutex);  in hidraw_read()
81 			remove_wait_queue(&list->hidraw->wait, &wait);  in hidraw_read()
87 		len = list->buffer[list->tail].len > count ?  in hidraw_read()
88 			count : list->buffer[list->tail].len;  in hidraw_read()
90 		if (list->buffer[list->tail].value) {  in hidraw_read()
91 			if (copy_to_user(buffer, list->buffer[list->tail].value, len)) {  in hidraw_read()
98 		kfree(list->buffer[list->tail].value);  in hidraw_read()
99 		list->buffer[list->tail].value = NULL;  in hidraw_read()
100 		list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_read()
103 	mutex_unlock(&list->read_mutex);  in hidraw_read()
259 	struct hidraw_list *list = file->private_data;  in hidraw_poll()  local
261 	poll_wait(file, &list->hidraw->wait, wait);  in hidraw_poll()
262 	if (list->head != list->tail)  in hidraw_poll()
264 	if (!list->hidraw->exist)  in hidraw_poll()
273 	struct hidraw_list *list;  in hidraw_open()  local
277 	if (!(list = kzalloc(sizeof(struct hidraw_list), GFP_KERNEL))) {  in hidraw_open()
304 	list->hidraw = hidraw_table[minor];  in hidraw_open()
305 	mutex_init(&list->read_mutex);  in hidraw_open()
307 	list_add_tail(&list->node, &hidraw_table[minor]->list);  in hidraw_open()
309 	file->private_data = list;  in hidraw_open()
314 		kfree(list);  in hidraw_open()
321 	struct hidraw_list *list = file->private_data;  in hidraw_fasync()  local
323 	return fasync_helper(fd, file, on, &list->fasync);  in hidraw_fasync()
354 	struct hidraw_list *list = file->private_data;  in hidraw_release()  local
360 	list_del(&list->node);  in hidraw_release()
362 	kfree(list);  in hidraw_release()
488 	struct hidraw_list *list;  in hidraw_report_event()  local
493 	list_for_each_entry(list, &dev->list, node) {  in hidraw_report_event()
494 		int new_head = (list->head + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_report_event()
496 		if (new_head == list->tail)  in hidraw_report_event()
499 		if (!(list->buffer[list->head].value = kmemdup(data, len, GFP_ATOMIC))) {  in hidraw_report_event()
503 		list->buffer[list->head].len = len;  in hidraw_report_event()
504 		list->head = new_head;  in hidraw_report_event()
505 		kill_fasync(&list->fasync, SIGIO, POLL_IN);  in hidraw_report_event()
556 	INIT_LIST_HEAD(&dev->list);  in hidraw_connect()