On 09/13/2012 05:03 PM, Anton Vorontsov wrote:
...
> +static int kgdb_nmi_tty_install(struct tty_driver *drv, struct tty_struct *tty)
> +{
> + struct kgdb_nmi_tty_priv *priv;
> + int ret;
> +
> + priv = kzalloc(sizeof(*priv), GFP_KERNEL);
> + if (!priv)
> + return -ENOMEM;
> +
> + INIT_KFIFO(priv->fifo);
> + tasklet_init(&priv->tlet, kgdb_nmi_tty_receiver, (unsigned long)priv);
> + tty_port_init(&priv->port);
> + priv->port.ops = &kgdb_nmi_tty_port_ops;
> + tty->driver_data = priv;
> +
> + ret = tty_port_install(&priv->port, drv, tty);
> + if (ret) {
> + pr_err("%s: can't nstall tty port: %d\n", __func__, ret);
s/nstall/install
...
> diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
> index 2b42a01..ed97cfd 100644
> --- a/drivers/tty/serial/kgdboc.c
> +++ b/drivers/tty/serial/kgdboc.c
> @@ -145,6 +145,8 @@ __setup("kgdboc=", kgdboc_option_setup);
>
> static void cleanup_kgdboc(void)
> {
> + if (kgdb_unregister_nmi_console())
> + return;
> kgdboc_unregister_kbd();
> if (configured == 1)
> kgdb_unregister_io_module(&kgdboc_io_ops);
> @@ -198,6 +200,10 @@ do_register:
> if (err)
> goto noconfig;
>
> + err = kgdb_register_nmi_console();
> + if (err)
> + goto noconfig;
If kgdb_register_nmi_console() fails, kgdb_unregister_io_module() must
be called for proper cleanup
--
Francesco
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