On 17/03/16 22:02, Sinan Kaya wrote:
Moving the default implementation of swiotlb_dma_to_phys and
swiotlb_phys_to_dma functions to dma-mapping.h so that we can get
rid of the duplicate code in multiple ARCH.
Signed-off-by: Sinan Kaya <okaya@xxxxxxxxxxxxxx>
---
arch/arm64/include/asm/dma-mapping.h | 14 --------------
arch/ia64/include/asm/dma-mapping.h | 14 --------------
arch/mips/include/asm/mach-generic/dma-coherence.h | 16 ----------------
arch/tile/include/asm/dma-mapping.h | 14 --------------
arch/unicore32/include/asm/dma-mapping.h | 14 --------------
arch/x86/include/asm/dma-mapping.h | 13 -------------
arch/xtensa/include/asm/dma-mapping.h | 14 --------------
include/linux/dma-mapping.h | 14 ++++++++++++++
8 files changed, 14 insertions(+), 99 deletions(-)
[...]
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 728ef07..871d620 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -683,4 +683,18 @@ static inline int dma_mmap_writecombine(struct device *dev,
#define dma_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0)
#endif
+#ifndef swiotlb_phys_to_dma
+static inline dma_addr_t swiotlb_phys_to_dma(struct device *dev, phys_addr_t paddr)
+{
+ return paddr;
+}
+#endif
+
+#ifndef swiotlb_dma_to_phys
+static inline phys_addr_t swiotlb_dma_to_phys(struct device *dev, dma_addr_t daddr)
+{
+ return daddr;
+}
+#endif
+
#endif
Could the default definition not be pushed all the way down into
swiotlb.c (or at least swiotlb.h)?
Robin.
