[POWERPC] PPC: Use ARRAY_SIZE macro when appropriate

[sfrench/cifs-2.6.git] / lib / rbtree.c

diff --git a/lib/rbtree.c b/lib/rbtree.c
index 1e55ba1c2edfac510c41c87e47e7849f99a5f3b3..48499c2d88ccf16d65c8891e3fc5a23e8cdf283a 100644 (file)
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -322,6 +322,9 @@ struct rb_node *rb_next(struct rb_node *node)
 {
        struct rb_node *parent;
 
+       if (rb_parent(node) == node)
+               return NULL;
+
        /* If we have a right-hand child, go down and then left as far
           as we can. */
        if (node->rb_right) {
@@ -348,6 +351,9 @@ struct rb_node *rb_prev(struct rb_node *node)
 {
        struct rb_node *parent;
 
+       if (rb_parent(node) == node)
+               return NULL;
+
        /* If we have a left-hand child, go down and then right as far
           as we can. */
        if (node->rb_left) {