From: Alan Cox <alan@linux.intel.com>
Date: Mon, 17 Sep 2012 11:01:40 +0000 (+0100)
Subject: tty: ipwireless: check ppp register worked
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b6abc90480a6bff2c2ff4904b7ae708f51ce8c03;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

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 57c8b481113f..d2af155dec8b 100644
--- 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;
 	}