tty_alloc_file    824 drivers/tty/pty.c 	retval = tty_alloc_file(filp);
tty_alloc_file   2026 drivers/tty/tty_io.c 	retval = tty_alloc_file(filp);
tty_alloc_file    561 include/linux/tty.h extern int tty_alloc_file(struct file *file);