[PATCH] avoid return NULL on root rb_node in rb_next/rb_prev

[Wang Sheng-Hui]

Signed-off-by: Wang Sheng-Hui <crosslonelyover@xxxxxxxxx>
---
 lib/rbtree.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/lib/rbtree.c b/lib/rbtree.c
index 15e10b1..474e9fd 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -356,9 +356,6 @@ struct rb_node *rb_next(const 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) {
@@ -385,9 +382,6 @@ struct rb_node *rb_prev(const 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) {
-- 
1.6.3.3



-- 


Thanks and Best Regards,
shenghui
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/