Commit c8259b67 authored by Zheng Chongzhen's avatar Zheng Chongzhen Committed by guzitao
Browse files

sw64: iommu: fix dma_supported of dma_ops 

Sunway inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IBDJNZ



--------------------------------

Since commit <6b3a638de236> ("sw64: correct the definition of
MAX_DMA_ADDRESS"), the implementation of dma_supported is incorrect,
and now we modify it to the public dma-direct implementation.

Signed-off-by: default avatarZheng Chongzhen <zhengchongzhen@wxiat.com>
Reviewed-by: default avatarHe Sheng <hesheng@wxiat.com>
Signed-off-by: default avatarGu Zitao <guzitao@wxiat.com>
parent 88f9e2f4

drivers/iommu/sw64/sunway_iommu.c

+2 −9
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/log2.h>

#include <linux/dma-mapping.h>

#include <linux/dma-map-ops.h>

#include <linux/dma-direct.h>

#include <linux/dma-iommu.h>

#include <linux/iommu.h>

#include <linux/iommu-helper.h>
@@ -1298,14 +1299,6 @@ sunway_unmap_sg(struct device *dev, struct scatterlist *sgl, 
	}

}



static int sunway_supported(struct device *dev, u64 mask)

{

	if (MAX_DMA_ADDRESS - PAGE_OFFSET - 1 <= mask)

		return 1;



	return 0;

}



static const struct dma_map_ops sunway_dma_ops = {

	.alloc = sunway_alloc_coherent,

	.free = sunway_free_coherent,
@@ -1313,7 +1306,7 @@ static const struct dma_map_ops sunway_dma_ops = { 
	.unmap_sg = sunway_unmap_sg,

	.map_page = sunway_map_page,

	.unmap_page = sunway_unmap_page,

	.dma_supported = sunway_supported,

	.dma_supported = dma_direct_supported,

};



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