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authorJaewon <jaewon31.kim@samsung.com>2016-05-25 07:29:50 +0300
committerRob Herring <robh@kernel.org>2016-06-03 15:24:10 +0300
commit7d482813bb3518cbfeae1b987a5afd76a88c7eb3 (patch)
tree85179fabe95d6cb5af46742b1d16b093b3d8130b /drivers/of
parent3993546646baf1dab5f5c4f7d9bb58f2046fd1c1 (diff)
downloadlinux-7d482813bb3518cbfeae1b987a5afd76a88c7eb3.tar.xz
drivers: of: of_reserved_mem: fixup the CMA alignment not to affect dma-coherent
There was an alignment mismatch issue for CMA and it was fixed by commit 1cc8e3458b51 ("drivers: of: of_reserved_mem: fixup the alignment with CMA setup"). However the way of the commit considers not only dma-contiguous(CMA) but also dma-coherent which has no that requirement. This patch checks more to distinguish dma-contiguous(CMA) from dma-coherent. Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Acked-by: Jason Liu <r64343@freescale.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> [robh: remove erroneous opening bracket] Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/of_reserved_mem.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c
index ed01c0172e4a..ed7e681efcf0 100644
--- a/drivers/of/of_reserved_mem.c
+++ b/drivers/of/of_reserved_mem.c
@@ -127,7 +127,10 @@ static int __init __reserved_mem_alloc_size(unsigned long node,
}
/* Need adjust the alignment to satisfy the CMA requirement */
- if (IS_ENABLED(CONFIG_CMA) && of_flat_dt_is_compatible(node, "shared-dma-pool"))
+ if (IS_ENABLED(CONFIG_CMA)
+ && of_flat_dt_is_compatible(node, "shared-dma-pool")
+ && of_get_flat_dt_prop(node, "reusable", NULL)
+ && !of_get_flat_dt_prop(node, "no-map", NULL))
align = max(align, (phys_addr_t)PAGE_SIZE << max(MAX_ORDER - 1, pageblock_order));
prop = of_get_flat_dt_prop(node, "alloc-ranges", &len);