1 files changed, 8 insertions, 4 deletions

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c3a8141ac788..3a330d7cae69 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1483,7 +1483,7 @@ bool is_mem_section_removable(unsigned long start_pfn, unsigned long nr_pages)
 }
 
 /*
- * Confirm all pages in a range [start, end) is belongs to the same zone.
+ * Confirm all pages in a range [start, end) belong to the same zone.
  */
 int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn)
 {
@@ -1491,9 +1491,9 @@ int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn)
         struct zone *zone = NULL;
         struct page *page;
         int i;
-        for (pfn = start_pfn, sec_end_pfn = SECTION_ALIGN_UP(start_pfn);
+        for (pfn = start_pfn, sec_end_pfn = SECTION_ALIGN_UP(start_pfn + 1);
              pfn < end_pfn;
-             pfn = sec_end_pfn + 1, sec_end_pfn += PAGES_PER_SECTION) {
+             pfn = sec_end_pfn, sec_end_pfn += PAGES_PER_SECTION) {
                 /* Make sure the memory section is present first */
                 if (!present_section_nr(pfn_to_section_nr(pfn)))
                         continue;
@@ -1512,7 +1512,11 @@ int test_pages_in_a_zone(unsigned long start_pfn, unsigned long end_pfn)
                         zone = page_zone(page);
                 }
         }
-        return 1;
+
+        if (zone)
+                return 1;
+        else
+                return 0;
 }
 
 /*