diff --git a/lib/llist.c b/lib/llist.c
index b445f2c..6c69f1d 100644
--- a/lib/llist.c
+++ b/lib/llist.c
@@ -41,11 +41,14 @@
 	struct llist_node *entry, *old_entry;
 
 	entry = head->first;
-	do {
+	for (;;) {
 		old_entry = entry;
 		new_last->next = entry;
+		entry = cmpxchg(&head->first, old_entry, new_first);
+		if (entry == old_entry)
+			break;
 		cpu_relax();
-	} while ((entry = cmpxchg(&head->first, old_entry, new_first)) != old_entry);
+	}
 }
 EXPORT_SYMBOL_GPL(llist_add_batch);
 
@@ -68,13 +71,16 @@
 	struct llist_node *entry, *old_entry, *next;
 
 	entry = head->first;
-	do {
+	for (;;) {
 		if (entry == NULL)
 			return NULL;
 		old_entry = entry;
 		next = entry->next;
+		entry = cmpxchg(&head->first, old_entry, next);
+		if (entry == old_entry)
+			break;
 		cpu_relax();
-	} while ((entry = cmpxchg(&head->first, old_entry, next)) != old_entry);
+	}
 
 	return entry;
 }