--- zzzz-none-000/linux-3.10.107/arch/c6x/include/asm/dma-mapping.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/c6x/include/asm/dma-mapping.h	2021-02-04 17:41:59.000000000 +0000
@@ -17,6 +17,14 @@
 
 #define dma_supported(d, m)	1
 
+static inline void dma_sync_single_range_for_device(struct device *dev,
+						    dma_addr_t addr,
+						    unsigned long offset,
+						    size_t size,
+						    enum dma_data_direction dir)
+{
+}
+
 static inline int dma_set_mask(struct device *dev, u64 dma_mask)
 {
 	if (!dev->dma_mask || !dma_supported(dev, dma_mask))