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2024-05-10 10ebd8556b7990499c896a550e3d416b444211e6

 kernel/arch/arm/include/asm/dma-iommu.h
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@@ -6,10 +6,7 @@
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 #include <linux/mm_types.h>
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 #include <linux/scatterlist.h>
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-#include <linux/dma-debug.h>
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 #include <linux/kref.h>
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-
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-#define ARM_MAPPING_ERROR		(~(dma_addr_t)0x0)
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 struct dma_iommu_mapping {
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 	/* iommu specific data */
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@@ -34,8 +31,6 @@
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 int arm_iommu_attach_device(struct device *dev,
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 					struct dma_iommu_mapping *mapping);
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 void arm_iommu_detach_device(struct device *dev);
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-
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-int arm_dma_supported(struct device *dev, u64 mask);
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 #endif /* __KERNEL__ */
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 #endif