m32r: mm: fix build warning

While building we are getting warnings:

  arch/m32r/mm/init.c:63:17: warning: unused variable 'low'
  arch/m32r/mm/init.c:62:17: warning: unused variable 'max_dma'

max_dma and low are only used if CONFIG_MMU is defined.  Lets declare
the variables inside the #ifdef.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
index 0d4146f..11fa717 100644 (file)
--- a/arch/m32r/mm/init.c
+++ b/arch/m32r/mm/init.c
@@ -59,21 +59,24 @@ void free_initrd_mem(unsigned long, unsigned long);
 void __init zone_sizes_init(void)
 {
        unsigned long  zones_size[MAX_NR_ZONES] = {0, };
-       unsigned long  max_dma;
-       unsigned long  low;
        unsigned long  start_pfn;
 
 #ifdef CONFIG_MMU
-       start_pfn = START_PFN(0);
-       max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
-       low = MAX_LOW_PFN(0);
-
-       if (low < max_dma){
-               zones_size[ZONE_DMA] = low - start_pfn;
-               zones_size[ZONE_NORMAL] = 0;
-       } else {
-               zones_size[ZONE_DMA] = low - start_pfn;
-               zones_size[ZONE_NORMAL] = low - max_dma;
+       {
+               unsigned long  low;
+               unsigned long  max_dma;
+
+               start_pfn = START_PFN(0);
+               max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
+               low = MAX_LOW_PFN(0);
+
+               if (low < max_dma) {
+                       zones_size[ZONE_DMA] = low - start_pfn;
+                       zones_size[ZONE_NORMAL] = 0;
+               } else {
+                       zones_size[ZONE_DMA] = low - start_pfn;
+                       zones_size[ZONE_NORMAL] = low - max_dma;
+               }
        }
 #else
        zones_size[ZONE_DMA] = 0 >> PAGE_SHIFT;