if (sclp_ttybuf == NULL) {
while (list_empty(&sclp_tty_pages)) {
spin_unlock_irqrestore(&sclp_tty_lock, flags);
if (sclp_ttybuf == NULL) {
while (list_empty(&sclp_tty_pages)) {
spin_unlock_irqrestore(&sclp_tty_lock, flags);
.state_change_fn = sclp_tty_state_change,
.receiver_fn = sclp_tty_receiver
};
.state_change_fn = sclp_tty_state_change,
.receiver_fn = sclp_tty_receiver
};