Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[pandora-kernel.git] / drivers / net / ehea / ehea_main.c

diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c
index 37a190d..147c4b0 100644 (file)
--- 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;