diff options
| author | Jason Wang <jasowang@redhat.com> | 2016-07-04 13:53:38 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-04 17:19:27 -0700 |
| commit | f48cc6b2661ccb6e9d85a5cdd78c0150929a2821 (patch) | |
| tree | 30ff3deff4a6bfbd17dfaafde2a0899373939b68 /drivers/net/tun.c | |
| parent | 22f8788388814cdb2f700086a6ffe94aacb3612c (diff) | |
tun: fix build warnings
Stephen Rothwell reports a build warnings(powerpc ppc64_defconfig)
drivers/net/tun.c: In function 'tun_do_read.part.5':
/home/sfr/next/next/drivers/net/tun.c:1491:6: warning: 'err' may be
used uninitialized in this function [-Wmaybe-uninitialized]
int err;
This is because tun_ring_recv() may return an uninitialized err, fix this.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 74752159ec34..5eadb7a1ad7b 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1447,12 +1447,13 @@ static struct sk_buff *tun_ring_recv(struct tun_file *tfile, int noblock, { DECLARE_WAITQUEUE(wait, current); struct sk_buff *skb = NULL; + int error = 0; skb = skb_array_consume(&tfile->tx_array); if (skb) goto out; if (noblock) { - *err = -EAGAIN; + error = -EAGAIN; goto out; } @@ -1464,11 +1465,11 @@ static struct sk_buff *tun_ring_recv(struct tun_file *tfile, int noblock, if (skb) break; if (signal_pending(current)) { - *err = -ERESTARTSYS; + error = -ERESTARTSYS; break; } if (tfile->socket.sk->sk_shutdown & RCV_SHUTDOWN) { - *err = -EFAULT; + error = -EFAULT; break; } @@ -1479,6 +1480,7 @@ static struct sk_buff *tun_ring_recv(struct tun_file *tfile, int noblock, remove_wait_queue(&tfile->wq.wait, &wait); out: + *err = error; return skb; } |