[PATCH] ARM: mm: fix type of the arm_dma_limit global variable

[Marek Szyprowski]

arm_dma_limit stores physical address of maximal address accessible by DMA,
so the phys_addr_t type makes much more sence for it instead of u32. This
patch fixes the following build warning:

arch/arm/mm/init.c:380: warning: comparison of distinct pointer types lacks a cast

Reported-by: Russell King <linux at arm.linux.org.uk>
Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
---
 arch/arm/mm/init.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 8f5813b..39f2a86 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -211,7 +211,7 @@ EXPORT_SYMBOL(arm_dma_zone_size);
  * allocations.  This must be the smallest DMA mask in the system,
  * so a successful GFP_DMA allocation will always satisfy this.
  */
-u32 arm_dma_limit;
+phys_addr_t arm_dma_limit;
 
 static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole,
 	unsigned long dma_size)
-- 
1.7.1.569.g6f426