diff --git a/[refs] b/[refs]
index c91e39bc84f9..c69c16b5339e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ad8f5797302ed389476debcc51b4630f387618b9
+refs/heads/master: 12783b002db1f02c29353c8f698a85514420b9f4
diff --git a/trunk/mm/sparse.c b/trunk/mm/sparse.c
index c5e89eb9ac8f..100040c0dfb6 100644
--- a/trunk/mm/sparse.c
+++ b/trunk/mm/sparse.c
@@ -87,11 +87,8 @@ int __section_nr(struct mem_section* ms)
 	unsigned long root_nr;
 	struct mem_section* root;
 
-	for (root_nr = 0;
-	     root_nr < NR_MEM_SECTIONS;
-	     root_nr += SECTIONS_PER_ROOT) {
-		root = __nr_to_section(root_nr);
-
+	for (root_nr = 0; root_nr < NR_SECTION_ROOTS; root_nr++) {
+		root = __nr_to_section(root_nr * SECTIONS_PER_ROOT);
 		if (!root)
 			continue;