xfrm/xfrm_state.c:1973:21: error: incompatible types in comparison expression (different address spaces)
Harmless, but lets fix it to reduce the noise. While at it, get rid of unneeded NULL check, its never hit: net/ipv4/xfrm4_state.c: xfrm_state_register_afinfo(&xfrm4_state_afinfo); net/ipv6/xfrm6_state.c: return xfrm_state_register_afinfo(&xfrm6_state_afinfo); net/ipv6/xfrm6_state.c: xfrm_state_unregister_afinfo(&xfrm6_state_afinfo); ... are the only callsites. Signed-off-by: Florian Westphal <[email protected]> --- net/xfrm/xfrm_state.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 64e3c82eedf6..e3c15ad1b246 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -1932,10 +1932,10 @@ EXPORT_SYMBOL(xfrm_unregister_km); int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo) { int err = 0; - if (unlikely(afinfo == NULL)) - return -EINVAL; - if (unlikely(afinfo->family >= NPROTO)) + + if (WARN_ON(afinfo->family >= NPROTO)) return -EAFNOSUPPORT; + spin_lock_bh(&xfrm_state_afinfo_lock); if (unlikely(xfrm_state_afinfo[afinfo->family] != NULL)) err = -EEXIST; @@ -1948,14 +1948,14 @@ EXPORT_SYMBOL(xfrm_state_register_afinfo); int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo) { - int err = 0; - if (unlikely(afinfo == NULL)) - return -EINVAL; - if (unlikely(afinfo->family >= NPROTO)) + int err = 0, family = afinfo->family; + + if (WARN_ON(family >= NPROTO)) return -EAFNOSUPPORT; + spin_lock_bh(&xfrm_state_afinfo_lock); if (likely(xfrm_state_afinfo[afinfo->family] != NULL)) { - if (unlikely(xfrm_state_afinfo[afinfo->family] != afinfo)) + if (rcu_access_pointer(xfrm_state_afinfo[family]) != afinfo) err = -EINVAL; else RCU_INIT_POINTER(xfrm_state_afinfo[afinfo->family], NULL); -- 2.7.3
