/* Locking: output_lock to protect column state and space left (also, this is called from n_tty_write under the tty layer write lock)  */
static int process_output(unsigned char c, struct tty_struct *tty)
/* Locking: output_lock to protect column state and space left (also, this is called from n_tty_write under the tty layer write lock)  */
static int process_output(unsigned char c, struct tty_struct *tty)
{
    int retval = 0;
    retval = do_output_char(c, tty);
    if (retval < 0)
    {
        return -1;
    }
    else
    {
        return 0;
    }
}