summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorOliver Hartkopp <socketcan@hartkopp.net>2016-06-21 15:45:47 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-08-10 10:21:03 +0200
commitaaf95b87cc9d2836a6103f4628d71186411033aa (patch)
treeed70c2fe7d5d5f52458c72c043deaf015c12e814
parent6f8f768a3586b6fbd50e249e7fe4f964a6994685 (diff)
downloadlwn-aaf95b87cc9d2836a6103f4628d71186411033aa.tar.gz
lwn-aaf95b87cc9d2836a6103f4628d71186411033aa.zip
can: fix oops caused by wrong rtnl dellink usage
commit 25e1ed6e64f52a692ba3191c4fde650aab3ecc07 upstream. For 'real' hardware CAN devices the netlink interface is used to set CAN specific communication parameters. Real CAN hardware can not be created nor removed with the ip tool ... This patch adds a private dellink function for the CAN device driver interface that does just nothing. It's a follow up to commit 993e6f2fd ("can: fix oops caused by wrong rtnl newlink usage") but for dellink. Reported-by: ajneu <ajneu1@gmail.com> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/net/can/dev.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index 0c5c745cda4c..fa78e45a2bee 100644
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -771,6 +771,11 @@ static int can_newlink(struct net *src_net, struct net_device *dev,
return -EOPNOTSUPP;
}
+static void can_dellink(struct net_device *dev, struct list_head *head)
+{
+ return;
+}
+
static struct rtnl_link_ops can_link_ops __read_mostly = {
.kind = "can",
.maxtype = IFLA_CAN_MAX,
@@ -778,6 +783,7 @@ static struct rtnl_link_ops can_link_ops __read_mostly = {
.setup = can_setup,
.newlink = can_newlink,
.changelink = can_changelink,
+ .dellink = can_dellink,
.get_size = can_get_size,
.fill_info = can_fill_info,
.get_xstats_size = can_get_xstats_size,