ARM: use phys_addr_t for DMA zone sizes

In order to specify a DMA zone size of 4GB on LPAE systems, the sizes need
to be 64-bit. So make machine_desc.dma_zone_size and arm_dma_zone_size be
phys_addr_t instead of unsigned long.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>

2 files changed, 2 insertions, 2 deletions

diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h
index 441efc491b50..d91b16857971 100644
--- a/arch/arm/include/asm/mach/arch.h
+++ b/arch/arm/include/asm/mach/arch.h
@@ -35,7 +35,7 @@ struct machine_desc {
         unsigned int            nr_irqs;        /* number of IRQs */
 
 #ifdef CONFIG_ZONE_DMA
-        unsigned long           dma_zone_size;  /* size of DMA-able area */
+        phys_addr_t             dma_zone_size;  /* size of DMA-able area */
 #endif
 
         unsigned int            video_start;    /* start of video RAM   */
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 15225d829d71..c0bb66e69999 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -207,7 +207,7 @@ static void __init arm_bootmem_init(unsigned long start_pfn,
 
 #ifdef CONFIG_ZONE_DMA
 
-unsigned long arm_dma_zone_size __read_mostly;
+phys_addr_t arm_dma_zone_size __read_mostly;
 EXPORT_SYMBOL(arm_dma_zone_size);
 
 /*