vlan: unnecessary to check if vlan_pcpu_stats is NULL

if allocating memory for vlan_pcpu_stats failed, the device can not be operated

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 733ec28..8f025af 100644 (file)
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -706,38 +706,36 @@ static void vlan_ethtool_get_drvinfo(struct net_device *dev,
 
 static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 {
+       struct vlan_pcpu_stats *p;
+       u32 rx_errors = 0, tx_dropped = 0;
+       int i;
 
-       if (vlan_dev_priv(dev)->vlan_pcpu_stats) {
-               struct vlan_pcpu_stats *p;
-               u32 rx_errors = 0, tx_dropped = 0;
-               int i;
-
-               for_each_possible_cpu(i) {
-                       u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
-                       unsigned int start;
-
-                       p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
-                       do {
-                               start = u64_stats_fetch_begin_irq(&p->syncp);
-                               rxpackets       = p->rx_packets;
-                               rxbytes         = p->rx_bytes;
-                               rxmulticast     = p->rx_multicast;
-                               txpackets       = p->tx_packets;
-                               txbytes         = p->tx_bytes;
-                       } while (u64_stats_fetch_retry_irq(&p->syncp, start));
-
-                       stats->rx_packets       += rxpackets;
-                       stats->rx_bytes         += rxbytes;
-                       stats->multicast        += rxmulticast;
-                       stats->tx_packets       += txpackets;
-                       stats->tx_bytes         += txbytes;
-                       /* rx_errors & tx_dropped are u32 */
-                       rx_errors       += p->rx_errors;
-                       tx_dropped      += p->tx_dropped;
-               }
-               stats->rx_errors  = rx_errors;
-               stats->tx_dropped = tx_dropped;
+       for_each_possible_cpu(i) {
+               u64 rxpackets, rxbytes, rxmulticast, txpackets, txbytes;
+               unsigned int start;
+
+               p = per_cpu_ptr(vlan_dev_priv(dev)->vlan_pcpu_stats, i);
+               do {
+                       start = u64_stats_fetch_begin_irq(&p->syncp);
+                       rxpackets       = p->rx_packets;
+                       rxbytes         = p->rx_bytes;
+                       rxmulticast     = p->rx_multicast;
+                       txpackets       = p->tx_packets;
+                       txbytes         = p->tx_bytes;
+               } while (u64_stats_fetch_retry_irq(&p->syncp, start));
+
+               stats->rx_packets       += rxpackets;
+               stats->rx_bytes         += rxbytes;
+               stats->multicast        += rxmulticast;
+               stats->tx_packets       += txpackets;
+               stats->tx_bytes         += txbytes;
+               /* rx_errors & tx_dropped are u32 */
+               rx_errors       += p->rx_errors;
+               tx_dropped      += p->tx_dropped;
        }
+       stats->rx_errors  = rx_errors;
+       stats->tx_dropped = tx_dropped;
+
        return stats;
 }