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-rw-r--r--arch/powerpc/include/asm/iommu.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h
index 8a8ce220d7d0..20febe0b7f32 100644
--- a/arch/powerpc/include/asm/iommu.h
+++ b/arch/powerpc/include/asm/iommu.h
@@ -139,6 +139,8 @@ struct scatterlist;
#ifdef CONFIG_PPC64
+#define IOMMU_MAPPING_ERROR (~(dma_addr_t)0x0)
+
static inline void set_iommu_table_base(struct device *dev,
struct iommu_table *base)
{
@@ -238,6 +240,8 @@ static inline int __init tce_iommu_bus_notifier_init(void)
}
#endif /* !CONFIG_IOMMU_API */
+int dma_iommu_mapping_error(struct device *dev, dma_addr_t dma_addr);
+
#else
static inline void *get_iommu_table_base(struct device *dev)