if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- serport = kcalloc(1, sizeof(struct serport), GFP_KERNEL);
+ serport = kzalloc(sizeof(struct serport), GFP_KERNEL);
if (!serport)
return -ENOMEM;
init_waitqueue_head(&serport->wait);
tty->disc_data = serport;
+ tty->receive_room = 256;
set_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
return 0;
spin_unlock_irqrestore(&serport->lock, flags);
}
-/*
- * serport_ldisc_room() reports how much room we do have for receiving data.
- * Although we in fact have infinite room, we need to specify some value
- * here, and 256 seems to be reasonable.
- */
-
-static int serport_ldisc_room(struct tty_struct *tty)
-{
- return 256;
-}
-
/*
* serport_ldisc_read() just waits indefinitely if everything goes well.
* However, when the serio driver closes the serio port, it finishes,
if (test_and_set_bit(SERPORT_BUSY, &serport->flags))
return -EBUSY;
- serport->serio = serio = kcalloc(1, sizeof(struct serio), GFP_KERNEL);
+ serport->serio = serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
if (!serio)
return -ENOMEM;
.read = serport_ldisc_read,
.ioctl = serport_ldisc_ioctl,
.receive_buf = serport_ldisc_receive,
- .receive_room = serport_ldisc_room,
.write_wakeup = serport_ldisc_write_wakeup
};
static void __exit serport_exit(void)
{
- tty_register_ldisc(N_MOUSE, NULL);
+ tty_unregister_ldisc(N_MOUSE);
}
module_init(serport_init);