41 static inline bool hidraw_is_revoked(struct hidraw_list *list)  in hidraw_is_revoked()  argument
43 	return list->revoked;  in hidraw_is_revoked()
48 	struct hidraw_list *list = file->private_data;  in hidraw_read()  local
52 	if (hidraw_is_revoked(list))  in hidraw_read()
55 	mutex_lock(&list->read_mutex);  in hidraw_read()
58 		if (list->head == list->tail) {  in hidraw_read()
59 			add_wait_queue(&list->hidraw->wait, &wait);  in hidraw_read()
62 			while (list->head == list->tail) {  in hidraw_read()
67 				if (!list->hidraw->exist) {  in hidraw_read()
77 				mutex_unlock(&list->read_mutex);  in hidraw_read()
79 				mutex_lock(&list->read_mutex);  in hidraw_read()
84 			remove_wait_queue(&list->hidraw->wait, &wait);  in hidraw_read()
90 		len = list->buffer[list->tail].len > count ?  in hidraw_read()
91 			count : list->buffer[list->tail].len;  in hidraw_read()
93 		if (list->buffer[list->tail].value) {  in hidraw_read()
94 			if (copy_to_user(buffer, list->buffer[list->tail].value, len)) {  in hidraw_read()
101 		kfree(list->buffer[list->tail].value);  in hidraw_read()
102 		list->buffer[list->tail].value = NULL;  in hidraw_read()
103 		list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_read()
106 	mutex_unlock(&list->read_mutex);  in hidraw_read()
172 	struct hidraw_list *list = file->private_data;  in hidraw_write()  local
175 	if (hidraw_is_revoked(list))  in hidraw_write()
265 	struct hidraw_list *list = file->private_data;  in hidraw_poll()  local
268 	poll_wait(file, &list->hidraw->wait, wait);  in hidraw_poll()
269 	if (list->head != list->tail)  in hidraw_poll()
271 	if (!list->hidraw->exist || hidraw_is_revoked(list))  in hidraw_poll()
280 	struct hidraw_list *list;  in hidraw_open()  local
284 	if (!(list = kzalloc(sizeof(struct hidraw_list), GFP_KERNEL))) {  in hidraw_open()
316 	list->hidraw = hidraw_table[minor];  in hidraw_open()
317 	mutex_init(&list->read_mutex);  in hidraw_open()
319 	list_add_tail(&list->node, &hidraw_table[minor]->list);  in hidraw_open()
321 	file->private_data = list;  in hidraw_open()
326 		kfree(list);  in hidraw_open()
333 	struct hidraw_list *list = file->private_data;  in hidraw_fasync()  local
335 	if (hidraw_is_revoked(list))  in hidraw_fasync()
338 	return fasync_helper(fd, file, on, &list->fasync);  in hidraw_fasync()
369 	struct hidraw_list *list = file->private_data;  in hidraw_release()  local
375 	while (list->tail != list->head) {  in hidraw_release()
376 		kfree(list->buffer[list->tail].value);  in hidraw_release()
377 		list->buffer[list->tail].value = NULL;  in hidraw_release()
378 		list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_release()
380 	list_del(&list->node);  in hidraw_release()
382 	kfree(list);  in hidraw_release()
390 static int hidraw_revoke(struct hidraw_list *list)  in hidraw_revoke()  argument
392 	list->revoked = true;  in hidraw_revoke()
404 	struct hidraw_list *list = file->private_data;  in hidraw_ioctl()  local
409 	if (!dev || !dev->exist || hidraw_is_revoked(list)) {  in hidraw_ioctl()
452 					ret = hidraw_revoke(list);  in hidraw_ioctl()
553 	struct hidraw_list *list;  in hidraw_report_event()  local
558 	list_for_each_entry(list, &dev->list, node) {  in hidraw_report_event()
559 		int new_head = (list->head + 1) & (HIDRAW_BUFFER_SIZE - 1);  in hidraw_report_event()
561 		if (hidraw_is_revoked(list) || new_head == list->tail)  in hidraw_report_event()
564 		if (!(list->buffer[list->head].value = kmemdup(data, len, GFP_ATOMIC))) {  in hidraw_report_event()
568 		list->buffer[list->head].len = len;  in hidraw_report_event()
569 		list->head = new_head;  in hidraw_report_event()
570 		kill_fasync(&list->fasync, SIGIO, POLL_IN);  in hidraw_report_event()
621 	INIT_LIST_HEAD(&dev->list);  in hidraw_connect()