[2.6 patch] net/8021q/vlanproc.c: fix check-after-use

From: Adrian Bunk
Date: Tue Aug 14 2007 - 17:29:19 EST


The Coverity checker spotted that we'd have already oops'ed if "vlandev"
was NULL.

Signed-off-by: Adrian Bunk <bunk@xxxxxxxxxx>

---
--- linux-2.6.23-rc1-mm2/net/8021q/vlanproc.c.old 2007-08-08 06:22:40.000000000 +0200
+++ linux-2.6.23-rc1-mm2/net/8021q/vlanproc.c 2007-08-08 06:23:13.000000000 +0200
@@ -314,17 +314,17 @@
static int vlandev_seq_show(struct seq_file *seq, void *offset)
{
struct net_device *vlandev = (struct net_device *) seq->private;
const struct vlan_dev_info *dev_info = VLAN_DEV_INFO(vlandev);
struct net_device_stats *stats;
static const char fmt[] = "%30s %12lu\n";
int i;

- if ((vlandev == NULL) || (!(vlandev->priv_flags & IFF_802_1Q_VLAN)))
+ if (!(vlandev->priv_flags & IFF_802_1Q_VLAN))
return 0;

seq_printf(seq, "%s VID: %d REORDER_HDR: %i dev->priv_flags: %hx\n",
vlandev->name, dev_info->vlan_id,
(int)(dev_info->flags & 1), vlandev->priv_flags);


stats = vlan_dev_get_stats(vlandev);

-
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