We recently changed this code from returning NULL to returning ERR_PTR.
There are some left over NULL assignments which we can remove. We can
preserve the error code from ip_route_output() instead of always
returning -ENODEV. Also these functions use a mix of gotos and direct
returns. There is no cleanup necessary so I changed the gotos to
direct returns.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 88cfaa2..d933059 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -337,14 +337,14 @@ static unsigned find_free_label(struct net *net)
#if IS_ENABLED(CONFIG_INET)
static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
{
- struct net_device *dev = NULL;
+ struct net_device *dev;
struct rtable *rt;
struct in_addr daddr;
memcpy(&daddr, addr, sizeof(struct in_addr));
rt = ip_route_output(net, daddr.s_addr, 0, 0, 0);
if (IS_ERR(rt))
- goto errout;
+ return ERR_CAST(rt);
dev = rt->dst.dev;
dev_hold(dev);
@@ -352,8 +352,6 @@ static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
ip_rt_put(rt);
return dev;
-errout:
- return ERR_PTR(-ENODEV);
}
#else
static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
@@ -365,7 +363,7 @@ static struct net_device *inet_fib_lookup_dev(struct net *net, void *addr)
#if IS_ENABLED(CONFIG_IPV6)
static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
{
- struct net_device *dev = NULL;
+ struct net_device *dev;
struct dst_entry *dst;
struct flowi6 fl6;
int err;
@@ -377,16 +375,13 @@ static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
memcpy(&fl6.daddr, addr, sizeof(struct in6_addr));
err = ipv6_stub->ipv6_dst_lookup(net, NULL, &dst, &fl6);
if (err)
- goto errout;
+ return ERR_PTR(err);
dev = dst->dev;
dev_hold(dev);
dst_release(dst);
return dev;
-
-errout:
- return ERR_PTR(err);
}
#else
static struct net_device *inet6_fib_lookup_dev(struct net *net, void *addr)
--
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