sh: use PFN_DOWN macro

Replace ((x) >> PAGE_SHIFT) with the predefined PFN_DOWN macro.

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 4 insertions, 4 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 2790b6a64157..17f486233db0 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -488,7 +488,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 int arch_add_memory(int nid, u64 start, u64 size)
 {
         pg_data_t *pgdat;
-        unsigned long start_pfn = start >> PAGE_SHIFT;
+        unsigned long start_pfn = PFN_DOWN(start);
         unsigned long nr_pages = size >> PAGE_SHIFT;
         int ret;
 
@@ -517,7 +517,7 @@ EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 #ifdef CONFIG_MEMORY_HOTREMOVE
 int arch_remove_memory(u64 start, u64 size)
 {
-        unsigned long start_pfn = start >> PAGE_SHIFT;
+        unsigned long start_pfn = PFN_DOWN(start);
         unsigned long nr_pages = size >> PAGE_SHIFT;
         struct zone *zone;
         int ret;
diff --git a/arch/sh/mm/numa.c b/arch/sh/mm/numa.c
index bce52ba66206..05713d190247 100644
--- a/arch/sh/mm/numa.c
+++ b/arch/sh/mm/numa.c
@@ -33,8 +33,8 @@ void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
         /* Don't allow bogus node assignment */
         BUG_ON(nid >= MAX_NUMNODES || nid <= 0);
 
-        start_pfn = start >> PAGE_SHIFT;
-        end_pfn = end >> PAGE_SHIFT;
+        start_pfn = PFN_DOWN(start);
+        end_pfn = PFN_DOWN(end);
 
         pmb_bolt_mapping((unsigned long)__va(start), start, end - start,
                          PAGE_KERNEL);