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ARM: mm: don't limit default CMA region only to low memory

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DMA-mapping supports CMA regions places either in low or high memory, so
there is no longer needed to limit default CMA regions only to low memory.
 The real limit is still defined by architecture specific DMA limit.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reported-by: Russell King - ARM Linux <linux@arm.linux.org.uk>
Acked-by: Michal Nazarewicz <mina86@mina86.com>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marek Szyprowski 2014-10-09 15:26:49 -07:00 committed by Linus Torvalds
parent f7426b983a
commit 95b0e655f9
1 changed files with 1 additions and 1 deletions
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2
arch/arm/mm/init.c
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@ -322,7 +322,7 @@ void __init arm_memblock_init(const struct machine_desc *mdesc)
* reserve memory for DMA contigouos allocations,
* must come from DMA area inside low memory
*/
dma_contiguous_reserve(min(arm_dma_limit, arm_lowmem_limit));
dma_contiguous_reserve(arm_dma_limit);
arm_memblock_steal_permitted = false;
memblock_dump_all();