[POWERPC] atomic_dec_if_positive sign extension fix

[linux-2.6-omap-h63xx.git] / net / core / neighbour.c

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 0ab1987b9348505b1ca0e6e6c155b3960a68b75c..e7300b6b40795e5011fa26ad87f0ed2766823fe7 100644 (file)
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -577,9 +577,10 @@ void neigh_destroy(struct neighbour *neigh)
        while ((hh = neigh->hh) != NULL) {
                neigh->hh = hh->hh_next;
                hh->hh_next = NULL;
-               write_lock_bh(&hh->hh_lock);
+
+               write_seqlock_bh(&hh->hh_lock);
                hh->hh_output = neigh_blackhole;
-               write_unlock_bh(&hh->hh_lock);
+               write_sequnlock_bh(&hh->hh_lock);
                if (atomic_dec_and_test(&hh->hh_refcnt))
                        kfree(hh);
        }
@@ -897,9 +898,9 @@ static void neigh_update_hhs(struct neighbour *neigh)
 
        if (update) {
                for (hh = neigh->hh; hh; hh = hh->hh_next) {
-                       write_lock_bh(&hh->hh_lock);
+                       write_seqlock_bh(&hh->hh_lock);
                        update(hh, neigh->dev, neigh->ha);
-                       write_unlock_bh(&hh->hh_lock);
+                       write_sequnlock_bh(&hh->hh_lock);
                }
        }
 }
@@ -1089,7 +1090,7 @@ static void neigh_hh_init(struct neighbour *n, struct dst_entry *dst,
                        break;
 
        if (!hh && (hh = kzalloc(sizeof(*hh), GFP_ATOMIC)) != NULL) {
-               rwlock_init(&hh->hh_lock);
+               seqlock_init(&hh->hh_lock);
                hh->hh_type = protocol;
                atomic_set(&hh->hh_refcnt, 0);
                hh->hh_next = NULL;