41 	struct hidraw_list *list = file->private_data;  in hidraw_read()  local
45 	mutex_lock(&list->read_mutex);  in hidraw_read()
48 		if (list->head == list->tail) {  in hidraw_read()
49 			add_wait_queue(&list->hidraw->wait, &wait);  in hidraw_read()
52 			while (list->head == list->tail) {  in hidraw_read()
57 				if (!list->hidraw->exist) {  in hidraw_read()
67 				mutex_unlock(&list->read_mutex);  in hidraw_read()
69 				mutex_lock(&list->read_mutex);  in hidraw_read()
74 			remove_wait_queue(&list->hidraw->wait, &wait);  in hidraw_read()
80 		len = list->buffer[list->tail].len > count ?  in hidraw_read()
81 			count : list->buffer[list->tail].len;  in hidraw_read()
83 		if (list->buffer[list->tail].value) {  in hidraw_read()
84 			if (copy_to_user(buffer, list->buffer[list->tail].value, len)) {  in hidraw_read()
91 		kfree(list->buffer[list->tail].value);  in hidraw_read()
92 		list->buffer[list->tail].value = NULL;  in hidraw_read()
93 		list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_read()
96 	mutex_unlock(&list->read_mutex);  in hidraw_read()
251 	struct hidraw_list *list = file->private_data;  in hidraw_poll()  local
253 	poll_wait(file, &list->hidraw->wait, wait);  in hidraw_poll()
254 	if (list->head != list->tail)  in hidraw_poll()
256 	if (!list->hidraw->exist)  in hidraw_poll()
265 	struct hidraw_list *list;  in hidraw_open()  local
269 	if (!(list = kzalloc(sizeof(struct hidraw_list), GFP_KERNEL))) {  in hidraw_open()
296 	list->hidraw = hidraw_table[minor];  in hidraw_open()
297 	mutex_init(&list->read_mutex);  in hidraw_open()
299 	list_add_tail(&list->node, &hidraw_table[minor]->list);  in hidraw_open()
301 	file->private_data = list;  in hidraw_open()
306 		kfree(list);  in hidraw_open()
313 	struct hidraw_list *list = file->private_data;  in hidraw_fasync()  local
315 	return fasync_helper(fd, file, on, &list->fasync);  in hidraw_fasync()
346 	struct hidraw_list *list = file->private_data;  in hidraw_release()  local
352 	list_del(&list->node);  in hidraw_release()
354 	kfree(list);  in hidraw_release()
480 	struct hidraw_list *list;  in hidraw_report_event()  local
485 	list_for_each_entry(list, &dev->list, node) {  in hidraw_report_event()
486 		int new_head = (list->head + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_report_event()
488 		if (new_head == list->tail)  in hidraw_report_event()
491 		if (!(list->buffer[list->head].value = kmemdup(data, len, GFP_ATOMIC))) {  in hidraw_report_event()
495 		list->buffer[list->head].len = len;  in hidraw_report_event()
496 		list->head = new_head;  in hidraw_report_event()
497 		kill_fasync(&list->fasync, SIGIO, POLL_IN);  in hidraw_report_event()
548 	INIT_LIST_HEAD(&dev->list);  in hidraw_connect()