44 	buf->tail = NULL;  in tty_buffer_free_all()
129 	WARN_ON(buf->head != buf->tail);  in __tty_buffer_flush()
220 	b = buf->tail;  in tty_buffer_request_room()
234 			buf->tail = n;  in tty_buffer_request_room()
263 		struct tty_buffer *tb = port->buf.tail;  in tty_insert_flip_string_fixed_flag()
301 		struct tty_buffer *tb = port->buf.tail;  in tty_insert_flip_string_flags()
339 	if (buf->tail != NULL)  in tty_schedule_flip()
340 		buf->tail->commit = buf->tail->used;  in tty_schedule_flip()
366 		struct tty_buffer *tb = port->buf.tail;  in tty_prepare_flip_string()
396 		struct tty_buffer *tb = port->buf.tail;  in tty_prepare_flip_string_flags()
516 	if (buf->tail != NULL)  in tty_flip_buffer_push()
517 		buf->tail->commit = buf->tail->used;  in tty_flip_buffer_push()
543 	buf->tail = NULL;  in tty_buffer_init()