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authorRussell King <rmk+kernel@arm.linux.org.uk>2011-07-22 23:09:07 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2011-07-22 23:09:07 +0100
commit3ad55155b222f2a901405dea20ff7c68828ecd92 (patch)
tree53b24c981387b037084a333dc5ae23be8e82ef4a /arch/arm/mm/init.c
parent06f365acef5ca54fd5708a0d853c4a89609536f1 (diff)
parent6645cb61f3a1186a71475385d33f875dd8fb38bf (diff)
Merge branch 'devel-stable' into for-next
Conflicts: arch/arm/kernel/entry-armv.S
Diffstat (limited to 'arch/arm/mm/init.c')
-rw-r--r--arch/arm/mm/init.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index e5ab4362322..2fee782077c 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -212,6 +212,10 @@ static void __init arm_bootmem_init(unsigned long start_pfn,
}
#ifdef CONFIG_ZONE_DMA
+
+unsigned long arm_dma_zone_size __read_mostly;
+EXPORT_SYMBOL(arm_dma_zone_size);
+
/*
* The DMA mask corresponding to the maximum bus address allocatable
* using GFP_DMA. The default here places no restriction on DMA
@@ -275,19 +279,17 @@ static void __init arm_bootmem_free(unsigned long min, unsigned long max_low,
#endif
}
-#ifdef ARM_DMA_ZONE_SIZE
-#ifndef CONFIG_ZONE_DMA
-#error ARM_DMA_ZONE_SIZE set but no DMA zone to limit allocations
-#endif
-
+#ifdef CONFIG_ZONE_DMA
/*
* Adjust the sizes according to any special requirements for
* this machine type.
*/
- arm_adjust_dma_zone(zone_size, zhole_size,
- ARM_DMA_ZONE_SIZE >> PAGE_SHIFT);
-
- arm_dma_limit = PHYS_OFFSET + ARM_DMA_ZONE_SIZE - 1;
+ if (arm_dma_zone_size) {
+ arm_adjust_dma_zone(zone_size, zhole_size,
+ arm_dma_zone_size >> PAGE_SHIFT);
+ arm_dma_limit = PHYS_OFFSET + arm_dma_zone_size - 1;
+ } else
+ arm_dma_limit = 0xffffffff;
#endif
free_area_init_node(0, zone_size, min, zhole_size);