tty_free_file     888 drivers/tty/pty.c 	tty_free_file(filp);
tty_free_file     233 drivers/tty/tty_io.c 	tty_free_file(file);
tty_free_file    2035 drivers/tty/tty_io.c 		tty_free_file(filp);
tty_free_file     563 include/linux/tty.h extern void tty_free_file(struct file *file);