From 7d482813bb3518cbfeae1b987a5afd76a88c7eb3 Mon Sep 17 00:00:00 2001 From: Jaewon Date: Wed, 25 May 2016 13:29:50 +0900 Subject: [PATCH] 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 Acked-by: Jason Liu Acked-by: Marek Szyprowski [robh: remove erroneous opening bracket] Signed-off-by: Rob Herring --- drivers/of/of_reserved_mem.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) 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);