*
* Required method.
*
+ * void (*shutdown)(struct tty_struct * tty);
+ *
+ * This routine is called when a particular tty device is closed for
+ * the last time freeing up the resources.
+ *
* int (*write)(struct tty_struct * tty,
* const unsigned char *buf, int count);
*
struct tty_operations {
int (*open)(struct tty_struct * tty, struct file * filp);
void (*close)(struct tty_struct * tty, struct file * filp);
+ void (*shutdown)(struct tty_struct *tty);
int (*write)(struct tty_struct * tty,
const unsigned char *buf, int count);
int (*put_char)(struct tty_struct *tty, unsigned char ch);