--- zzzz-none-000/linux-3.10.107/arch/mips/include/asm/mach-generic/dma-coherence.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/include/asm/mach-generic/dma-coherence.h	2021-02-04 17:41:59.000000000 +0000
@@ -47,23 +47,27 @@
 	return 1;
 }
 
-static inline void plat_extra_sync_for_device(struct device *dev)
+static inline int plat_device_is_coherent(struct device *dev)
 {
+	return coherentio;
 }
 
-static inline int plat_dma_mapping_error(struct device *dev,
-					 dma_addr_t dma_addr)
+#ifndef plat_post_dma_flush
+static inline void plat_post_dma_flush(struct device *dev)
 {
-	return 0;
 }
+#endif
 
-static inline int plat_device_is_coherent(struct device *dev)
+#ifdef CONFIG_SWIOTLB
+static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
 {
-#ifdef CONFIG_DMA_COHERENT
-	return 1;
-#else
-	return coherentio;
-#endif
+	return paddr;
 }
 
+static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
+{
+	return daddr;
+}
+#endif
+
 #endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */