[NETFILTER]: xt_iprange: fix sparse warnings

  CHECK   net/netfilter/xt_iprange.c
net/netfilter/xt_iprange.c:104:19: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:37: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:19: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:37: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:19: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:37: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:19: warning: restricted degrades to integer
net/netfilter/xt_iprange.c:104:37: warning: restricted degrades to integer

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/netfilter/xt_iprange.c b/net/netfilter/xt_iprange.c
index dbea0e0..01035fc 100644 (file)
--- a/net/netfilter/xt_iprange.c
+++ b/net/netfilter/xt_iprange.c
@@ -101,7 +101,7 @@ iprange_ipv6_sub(const struct in6_addr *a, const struct in6_addr *b)
        int r;
 
        for (i = 0; i < 4; ++i) {
-               r = a->s6_addr32[i] - b->s6_addr32[i];
+               r = (__force u32)a->s6_addr32[i] - (__force u32)b->s6_addr32[i];
                if (r != 0)
                        return r;
        }