diff options
Diffstat (limited to 'drivers/tty/tty_port.c')
| -rw-r--r-- | drivers/tty/tty_port.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c index d7bdd8d0c23f..b7ff59d3db88 100644 --- a/drivers/tty/tty_port.c +++ b/drivers/tty/tty_port.c @@ -21,6 +21,7 @@ void tty_port_init(struct tty_port *port) { memset(port, 0, sizeof(*port)); + tty_buffer_init(port); init_waitqueue_head(&port->open_wait); init_waitqueue_head(&port->close_wait); init_waitqueue_head(&port->delta_msr_wait); @@ -121,12 +122,27 @@ void tty_port_free_xmit_buf(struct tty_port *port) } EXPORT_SYMBOL(tty_port_free_xmit_buf); +/** + * tty_port_destroy -- destroy inited port + * @port: tty port to be doestroyed + * + * When a port was initialized using tty_port_init, one has to destroy the + * port by this function. Either indirectly by using tty_port refcounting + * (tty_port_put) or directly if refcounting is not used. + */ +void tty_port_destroy(struct tty_port *port) +{ + tty_buffer_free_all(port); +} +EXPORT_SYMBOL(tty_port_destroy); + static void tty_port_destructor(struct kref *kref) { struct tty_port *port = container_of(kref, struct tty_port, kref); if (port->xmit_buf) free_page((unsigned long)port->xmit_buf); - if (port->ops->destruct) + tty_port_destroy(port); + if (port->ops && port->ops->destruct) port->ops->destruct(port); else kfree(port); |