mac80211: fix "warning: ‘target_metric’ may be used uninitialized"

jeffmahoney · jmberg-intel · commit b4201cc4fc6e · 2016-04-06T15:10:25.000+02:00
This fixes:

net/mac80211/mesh_hwmp.c:603:26: warning: ‘target_metric’ may be used uninitialized in this function

target_metric is only consumed when reply = true so no bug exists here,
but not all versions of gcc realize it.  Initialize to 0 to remove the
warning.

Signed-off-by: Jeff Mahoney &lt;jeffm@suse.com&gt;
Signed-off-by: Johannes Berg &lt;johannes.berg@intel.com&gt;
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
@@ -530,7 +530,7 @@ static void hwmp_preq_frame_process(struct ieee80211_sub_if_data *sdata,
 	const u8 *target_addr, *orig_addr;
 	const u8 *da;
 	u8 target_flags, ttl, flags;
-	u32 orig_sn, target_sn, lifetime, target_metric;
+	u32 orig_sn, target_sn, lifetime, target_metric = 0;
 	bool reply = false;
 	bool forward = true;
 	bool root_is_gate;
