[VLAN]: sparse warning fix

Minor sparse warning fix.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlanproc.c b/net/8021q/vlanproc.c
index 2a4e1aa..a0ec479 100644
--- a/net/8021q/vlanproc.c
+++ b/net/8021q/vlanproc.c
@@ -220,6 +220,7 @@
 
 /* start read of /proc/net/vlan/config */
 static void *vlan_seq_start(struct seq_file *seq, loff_t *pos)
+	__acquires(dev_base_lock)
 {
 	struct net_device *dev;
 	loff_t i = 1;
@@ -261,6 +262,7 @@
 }
 
 static void vlan_seq_stop(struct seq_file *seq, void *v)
+	__releases(dev_base_lock)
 {
 	read_unlock(&dev_base_lock);
 }