On Wed, Oct 30, 2013 at 03:39:26PM +0800, Duan Jiong wrote:

After reading the function rt6_check_neigh(), we can
know that the RT6_NUD_FAIL_SOFT can be returned only
when the IS_ENABLE(CONFIG_IPV6_ROUTER_PREF) is false.
so in function find_match(), there is no need to execute
the statement !IS_ENABLED(CONFIG_IPV6_ROUTER_PREF).

It should be constant folded away. But I agree, we can remove this:

Acked-by: Hannes Frederic Sowa <redacted>

Thanks,

  Hannes