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-rw-r--r--drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
index 5f4e447c5dce..b8bbee645f51 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_config.c
@@ -301,10 +301,13 @@ static int rmnet_changelink(struct net_device *dev, struct nlattr *tb[],
struct rmnet_port *port;
u16 mux_id;
+ if (!dev)
+ return -ENODEV;
+
real_dev = __dev_get_by_index(dev_net(dev),
nla_get_u32(tb[IFLA_LINK]));
- if (!real_dev || !dev || !rmnet_is_real_dev_registered(real_dev))
+ if (!real_dev || !rmnet_is_real_dev_registered(real_dev))
return -ENODEV;
port = rmnet_get_port_rtnl(real_dev);