microblaze: Fix paging init-zone initialization

This patch fix problem with bad zone initialization.
This bug wasn't perform because Microblaze doesn't
define CONFIG_ZONE_DMA and ZONE_NORMAL was 0 for this case
that's why free_area_init works with correct values.

Original message:
I believe that the switch from ZONE_DMA (== 0) to ZONE_NORMAL
broke the free area initialization.

Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 3 insertions, 4 deletions

diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index 31ec053c1dd..6ef5088a8d2 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -44,16 +44,15 @@ static void __init paging_init(void)
         int i;
         unsigned long zones_size[MAX_NR_ZONES];
 
+        /* Clean every zones */
+        memset(zones_size, 0, sizeof(zones_size));
+
         /*
          * old: we can DMA to/from any address.put all page into ZONE_DMA
          * We use only ZONE_NORMAL
          */
         zones_size[ZONE_NORMAL] = max_mapnr;
 
-        /* every other zones are empty */
-        for (i = 1; i < MAX_NR_ZONES; i++)
-                zones_size[i] = 0;
-
         free_area_init(zones_size);
 }