tty: ipwireless: check ppp register worked

Otherwise we start trying to use a bogus channel - ungood.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/ipwireless/network.c b/drivers/tty/ipwireless/network.c
index 57c8b481113f79fd01c96ddbcde3ca013fc6cb5b..d2af155dec8b91e1f915feb8b6c9f8be26f9e815 100644 (file)
--- a/drivers/tty/ipwireless/network.c
+++ b/drivers/tty/ipwireless/network.c
@@ -274,7 +274,12 @@ static void do_go_online(struct work_struct *work_go_online)
                network->xaccm[0] = ~0U;
                network->xaccm[3] = 0x60000000U;
                network->raccm = ~0U;
-               ppp_register_channel(channel);
+               if (ppp_register_channel(channel) < 0) {
+                       printk(KERN_ERR IPWIRELESS_PCCARD_NAME
+                                       ": unable to register PPP channel\n");
+                       kfree(channel);
+                       return;
+               }
                spin_lock_irqsave(&network->lock, flags);
                network->ppp_channel = channel;
        }