tunneling: Fix uninitialized variable warning in check_mtu.

The MTU is only needed if we are doing PMTUD but some compilers
complain that it could be used uninitialized.

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

diff --git a/datapath/tunnel.c b/datapath/tunnel.c
index 6d0e7b9..7bf46e0 100644 (file)
--- a/datapath/tunnel.c
+++ b/datapath/tunnel.c
@@ -717,7 +717,7 @@ static bool check_mtu(struct sk_buff *skb,
 {
        bool pmtud = mutable->flags & TNL_F_PMTUD;
        __be16 frag_off = 0;
-       int mtu;
+       int mtu = 0;
 
        if (pmtud) {
                frag_off = htons(IP_DF);