dma: shdma: prepare for conversion to the shdma base library

By placing an anonymous union at the top of struct sh_dmae_slave we can
transparently prepare all device and client drivers for the upcoming
shdma-base conversion.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/sh_dma.h b/include/linux/sh_dma.h
index 425450b980b8..e081e8e8d109 100644
--- a/include/linux/sh_dma.h
+++ b/include/linux/sh_dma.h
@@ -10,12 +10,16 @@
 #ifndef SH_DMA_H
 #define SH_DMA_H
 
-#include <linux/list.h>
 #include <linux/dmaengine.h>
+#include <linux/list.h>
+#include <linux/shdma-base.h>
 
 /* Used by slave DMA clients to request DMA to/from a specific peripheral */
 struct sh_dmae_slave {
-        unsigned int                    slave_id; /* Set by the platform */
+        union {
+                unsigned int            slave_id; /* Set by the platform */
+                struct shdma_slave      shdma_slave;
+        };
         struct device                   *dma_dev; /* Set by the platform */
         const struct sh_dmae_slave_config       *config;  /* Set by the driver */
 };