m68k/coldfire: use PFN_DOWN macro

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

Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/arch/m68k/coldfire/m54xx.c b/arch/m68k/coldfire/m54xx.c
index 075aaabd1360..f7836c6a6b60 100644
--- a/arch/m68k/coldfire/m54xx.c
+++ b/arch/m68k/coldfire/m54xx.c
@@ -25,6 +25,7 @@
 #include <asm/m54xxgpt.h>
 #ifdef CONFIG_MMU
 #include <asm/mmu_context.h>
+#include <linux/pfn.h>
 #endif
 
 /***************************************************************************/
@@ -91,13 +92,13 @@ static void __init mcf54xx_bootmem_alloc(void)
         m68k_memory[0].size = _ramend - _rambase;
 
         /* compute total pages in system */
-        num_pages = (_ramend - _rambase) >> PAGE_SHIFT;
+        num_pages = PFN_DOWN(_ramend - _rambase);
 
         /* page numbers */
         memstart = PAGE_ALIGN(_ramstart);
-        min_low_pfn = _rambase >> PAGE_SHIFT;
-        start_pfn = memstart >> PAGE_SHIFT;
-        max_low_pfn = _ramend >> PAGE_SHIFT;
+        min_low_pfn = PFN_DOWN(_rambase);
+        start_pfn = PFN_DOWN(memstart);
+        max_low_pfn = PFN_DOWN(_ramend);
         high_memory = (void *)_ramend;
 
         m68k_virt_to_node_shift = fls(_ramend - _rambase - 1) - 6;