1 files changed, 3 insertions, 1 deletions

diff --git a/lib/list_sort.c b/lib/list_sort.c
index a34c78c30d56..6b9fdaf1d32e 100644
--- a/lib/list_sort.c
+++ b/lib/list_sort.c
@@ -47,6 +47,7 @@ static void merge_and_restore_back_links(void *priv,
                                 struct list_head *a, struct list_head *b)
 {
         struct list_head *tail = head;
+        u8 count = 0;
 
         while (a && b) {
                 /* if equal, take 'a' -- important for sort stability */
@@ -70,7 +71,8 @@ static void merge_and_restore_back_links(void *priv,
                  * element comparison is needed, so the client's cmp()
                  * routine can invoke cond_resched() periodically.
                  */
-                (*cmp)(priv, tail->next, tail->next);
+                if (unlikely(!(++count)))
+                        (*cmp)(priv, tail->next, tail->next);
 
                 tail->next->prev = tail;
                 tail = tail->next;