--- zzzz-none-000/linux-3.10.107/arch/sh/drivers/dma/dma-sh.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/sh/drivers/dma/dma-sh.c	2021-02-04 17:41:59.000000000 +0000
@@ -25,7 +25,7 @@
  * Define the default configuration for dual address memory-memory transfer.
  * The 0x400 value represents auto-request, external->external.
  */
-#define RS_DUAL	(DM_INC | SM_INC | 0x400 | TS_INDEX2VAL(XMIT_SZ_32BIT))
+#define RS_DUAL	(DM_INC | SM_INC | RS_AUTO | TS_INDEX2VAL(XMIT_SZ_32BIT))
 
 static unsigned long dma_find_base(unsigned int chan)
 {