datapath: Fully parenthesize ACTION macro.

This doesn't matter for any of the current users of ACTION, nor do I expect
it to matter, but it seems like a good idea nonetheless.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Jesse Gross <jesse@nicira.com>

diff --git a/datapath/datapath.c b/datapath/datapath.c
index dab8631..be90d54 100644 (file)
--- a/datapath/datapath.c
+++ b/datapath/datapath.c
@@ -552,7 +552,7 @@ static int validate_action_key(const struct nlattr *a,
            nla_len(ovs_key) != ovs_key_lens[key_type])
                return -EINVAL;
 
-#define ACTION(act, key)       ((act << 8) | key)
+#define ACTION(act, key)       (((act) << 8) | (key))
 
        switch(ACTION(act_type, key_type)) {
        const struct ovs_key_ipv4 *ipv4_key;