[PATCH] SH: use PFN_DOWN macro

[Alexander Kuleshov]

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

Signed-off-by: Alexander Kuleshov <kuleshovm...@gmail.com>
---
 arch/sh/mm/init.c | 4 ++--
 arch/sh/mm/numa.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 2790b6a..17f4862 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -488,6 +488,6 @@ 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 bce52ba..05713d1 100644
--- a/arch/sh/mm/numa.c
+++ b/arch/sh/mm/numa.c
@@ -33,2 +33,2 @@ 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);
--
2.5.0

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