1 files changed, 20 insertions, 15 deletions

diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index ac0c5b438e0a..b22dab9153f6 100644
--- a/drivers/net/ehea/ehea_main.c
+++ b/drivers/net/ehea/ehea_main.c
@@ -545,14 +545,17 @@ static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
         x &= (arr_len - 1);
 
         pref = skb_array[x];
-        prefetchw(pref);
-        prefetchw(pref + EHEA_CACHE_LINE);
-
-        pref = (skb_array[x]->data);
-        prefetch(pref);
-        prefetch(pref + EHEA_CACHE_LINE);
-        prefetch(pref + EHEA_CACHE_LINE * 2);
-        prefetch(pref + EHEA_CACHE_LINE * 3);
+        if (pref) {
+                prefetchw(pref);
+                prefetchw(pref + EHEA_CACHE_LINE);
+
+                pref = (skb_array[x]->data);
+                prefetch(pref);
+                prefetch(pref + EHEA_CACHE_LINE);
+                prefetch(pref + EHEA_CACHE_LINE * 2);
+                prefetch(pref + EHEA_CACHE_LINE * 3);
+        }
+
         skb = skb_array[skb_index];
         skb_array[skb_index] = NULL;
         return skb;
@@ -569,12 +572,14 @@ static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
         x &= (arr_len - 1);
 
         pref = skb_array[x];
-        prefetchw(pref);
-        prefetchw(pref + EHEA_CACHE_LINE);
+        if (pref) {
+                prefetchw(pref);
+                prefetchw(pref + EHEA_CACHE_LINE);
 
-        pref = (skb_array[x]->data);
-        prefetchw(pref);
-        prefetchw(pref + EHEA_CACHE_LINE);
+                pref = (skb_array[x]->data);
+                prefetchw(pref);
+                prefetchw(pref + EHEA_CACHE_LINE);
+        }
 
         skb = skb_array[wqe_index];
         skb_array[wqe_index] = NULL;
@@ -3080,7 +3085,8 @@ static const struct net_device_ops ehea_netdev_ops = {
         .ndo_change_mtu         = ehea_change_mtu,
         .ndo_vlan_rx_register   = ehea_vlan_rx_register,
         .ndo_vlan_rx_add_vid    = ehea_vlan_rx_add_vid,
-        .ndo_vlan_rx_kill_vid   = ehea_vlan_rx_kill_vid
+        .ndo_vlan_rx_kill_vid   = ehea_vlan_rx_kill_vid,
+        .ndo_tx_timeout         = ehea_tx_watchdog,
 };
 
 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
@@ -3142,7 +3148,6 @@ struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
                       | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
                       | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
                       | NETIF_F_LLTX;
-        dev->tx_timeout = &ehea_tx_watchdog;
         dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
 
         INIT_WORK(&port->reset_task, ehea_reset_port);