1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 7c5d87191b28..85be040a21c8 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -228,8 +228,8 @@ memory_block_action(unsigned long phys_index, unsigned long action, int online_t
         struct page *first_page;
         int ret;
 
-        first_page = pfn_to_page(phys_index << PFN_SECTION_SHIFT);
-        start_pfn = page_to_pfn(first_page);
+        start_pfn = phys_index << PFN_SECTION_SHIFT;
+        first_page = pfn_to_page(start_pfn);
 
         switch (action) {
                 case MEM_ONLINE: