commit aeed9e82cd258b9699eaa6568efefba9cc6d5f01
author Herbert Xu <herbert@gondor.apana.org.au> Mon Jul 30 16:37:19 2007 -0700
committer David S. Miller <davem@sunset.davemloft.net> Tue Jul 31 02:28:14 2007 -0700
tree 0a3cd08162e6c7b11a7fde452877571b48559620
parent 7f988eab57bd22884bbc452fb04c6c18738666b3

[NET] loopback: Panic if registration fails

Because IPv4 and IPv6 both depend on the presence of the loopback
device to function, failure in registration the loopback device should
be fatal.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/loopback.c

diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 6ba6ed2..5106c23 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -229,7 +229,12 @@
 /* Setup and register the loopback device. */
 static int __init loopback_init(void)
 {
-	return register_netdev(&loopback_dev);
+	int err = register_netdev(&loopback_dev);
+
+	if (err)
+		panic("loopback: Failed to register netdevice: %d\n", err);
+
+	return err;
 };
 
 module_init(loopback_init);