*/
static int tiocsti(struct tty_struct *tty, char __user *p)
{
- char ch, mbz = 0;
+ char ch;
struct tty_ldisc *ld;
if (!tty_legacy_tiocsti && !capable(CAP_SYS_ADMIN))
return -EIO;
tty_buffer_lock_exclusive(tty->port);
if (ld->ops->receive_buf)
- ld->ops->receive_buf(tty, &ch, &mbz, 1);
+ ld->ops->receive_buf(tty, &ch, NULL, 1);
tty_buffer_unlock_exclusive(tty->port);
tty_ldisc_deref(ld);
return 0;