netdev - [patch] hamradio/kiss: missing error code in mkiss

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Message-ID: <20150810213922.GA3380@mwanda>
Date:	Tue, 11 Aug 2015 00:39:22 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	netdev@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	RUC_Soft_Sec <zy900702@....com>
Subject: [patch] hamradio/kiss: missing error code in mkiss_open()

If register_netdev() fails we return success but we should return an
error code instead.

Reported-by: RUC_Soft_Sec <zy900702@....com>
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/drivers/net/hamradio/mkiss.c b/drivers/net/hamradio/mkiss.c
index 2ffbf13..dcb6bb7 100644
--- a/drivers/net/hamradio/mkiss.c
+++ b/drivers/net/hamradio/mkiss.c
@@ -732,7 +732,8 @@ static int mkiss_open(struct tty_struct *tty)
 		goto out_free_netdev;
 	}
 
-	if (register_netdev(dev))
+	err = register_netdev(dev);
+	if (err)
 		goto out_free_buffers;
 
 	/* after register_netdev() - because else printk smashes the kernel */
--
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