Update the signature of dn_dst_gc() to return void instead of int. This change is required because the .gc member of struct dst_ops was updated to a void return type in a previous commit [1]. This leads to the following build error: net/decnet/dn_route.c:132:10: error: initialization of 'void (*)(struct dst_ops *)' from incompatible pointer type 'int (*)(struct dst_ops *)' [-Werror=incompatible-pointer-types] Note that dst_alloc() inside net/core/dst.c was already updated to ignore the return value of this callback. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=af6d10345ca76670c1b7c37799f0d5576ccef277 Fixes: af6d10345ca7 ("ipv6: remove max_size check inline with ipv4") Signed-off-by: Carlos Bilbao (Lambda) ---  net/decnet/dn_route.c | 6 ++----  1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c index 729d3de6020d..840a0e3852de 100644 --- a/net/decnet/dn_route.c +++ b/net/decnet/dn_route.c @@ -100,7 +100,7 @@ static const int dn_rt_mtu_expires = 10 * 60 * HZ;  static unsigned long dn_rt_deadline; -static int dn_dst_gc(struct dst_ops *ops); +static void dn_dst_gc(struct dst_ops *ops);  static struct dst_entry *dn_dst_check(struct dst_entry *, __u32);  static unsigned int dn_dst_default_advmss(const struct dst_entry *dst);  static unsigned int dn_dst_mtu(const struct dst_entry *dst); @@ -208,7 +208,7 @@ static void dn_dst_check_expire(struct timer_list *unused)      mod_timer(&dn_route_timer, now + decnet_dst_gc_interval * HZ);  } -static int dn_dst_gc(struct dst_ops *ops) +static void dn_dst_gc(struct dst_ops *ops)  {      struct dn_route *rt;      struct dn_route __rcu **rtp; @@ -236,8 +236,6 @@ static int dn_dst_gc(struct dst_ops *ops)          }          spin_unlock_bh(&dn_rt_hash_table[i].lock);      } - -    return 0;  }  /* -- 2.50.1 (Apple Git-155)