Just fold the calculation into __phys_to_dma/__dma_to_phys as those are
the only places that should know about it.
Signed-off-by: Christoph Hellwig <h...@lst.de>
---
arch/powerpc/include/asm/dma-direct.h | 8 ++++++--
arch/powerpc/include/asm/dma-mapping.h | 16 ----------------
2 files changed, 6 insertions(+), 18 deletions(-)
diff --git a/arch/powerpc/include/asm/dma-direct.h
b/arch/powerpc/include/asm/dma-direct.h
index 7702875aabb7..0fba19445ae8 100644
--- a/arch/powerpc/include/asm/dma-direct.h
+++ b/arch/powerpc/include/asm/dma-direct.h
@@ -19,11 +19,15 @@ static inline bool dma_capable(struct device *dev,
dma_addr_t addr, size_t size)
static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr)
{
- return paddr + get_dma_offset(dev);
+ if (!dev)
+ return paddr + PCI_DRAM_OFFSET;
+ return paddr + dev->archdata.dma_offset;
}
static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr)
{
- return daddr - get_dma_offset(dev);
+ if (!dev)
+ return daddr - PCI_DRAM_OFFSET;
+ return daddr - dev->archdata.dma_offset;
}
#endif /* ASM_POWERPC_DMA_DIRECT_H */
diff --git a/arch/powerpc/include/asm/dma-mapping.h
b/arch/powerpc/include/asm/dma-mapping.h
index dacd0f93f2b2..f0bf7ac2686c 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -80,22 +80,6 @@ static inline const struct dma_map_ops
*get_arch_dma_ops(struct bus_type *bus)
return NULL;
}
-/*
- * get_dma_offset()
- *
- * Get the dma offset on configurations where the dma address can be determined
- * from the physical address by looking at a simple offset. Direct dma and
- * swiotlb use this function, but it is typically not used by implementations
- * with an iommu.
- */
-static inline dma_addr_t get_dma_offset(struct device *dev)
-{
- if (dev)
- return dev->archdata.dma_offset;
-
- return PCI_DRAM_OFFSET;
-}
-
static inline void set_dma_offset(struct device *dev, dma_addr_t off)
{
if (dev)
--
2.18.0
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