netdev - [PATCH] pkt_sched: Fix warning false positives.

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Message-Id: <20120927.183610.856094988680936386.davem@davemloft.net>
Date:	Thu, 27 Sep 2012 18:36:10 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
Subject: [PATCH] pkt_sched: Fix warning false positives.


GCC refuses to recognize that all error control flows do in fact
set err to something.

Add an explicit initialization to shut it up.

net/sched/sch_drr.c: In function ‘drr_enqueue’:
net/sched/sch_drr.c:359:11: warning: ‘err’ may be used uninitialized in this function [-Wmaybe-uninitialized]
net/sched/sch_qfq.c: In function ‘qfq_enqueue’:
net/sched/sch_qfq.c:885:11: warning: ‘err’ may be used uninitialized in this function [-Wmaybe-uninitialized]

Signed-off-by: David S. Miller <davem@...emloft.net>
---
 net/sched/sch_drr.c | 2 +-
 net/sched/sch_qfq.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index 9ce0b4f..71e50c8 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -352,7 +352,7 @@ static int drr_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
 	struct drr_sched *q = qdisc_priv(sch);
 	struct drr_class *cl;
-	int err;
+	int err = 0;
 
 	cl = drr_classify(skb, sch, &err);
 	if (cl == NULL) {
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index e4723d3..2556620 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -878,7 +878,7 @@ static int qfq_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
 	struct qfq_sched *q = qdisc_priv(sch);
 	struct qfq_class *cl;
-	int err;
+	int err = 0;
 
 	cl = qfq_classify(skb, sch, &err);
 	if (cl == NULL) {
-- 
1.7.11.4