ASoC: rsnd: remove duplicate *priv from rsnd_dma

*priv pointer exists under rsnd_mod,
and, it can get rsnd_mod pointer from rsnd_dma.
remove duplicate rsnd_dma :: priv
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/sh/rcar/core.c

@@ -156,7 +156,7 @@ void rsnd_dma_stop(struct rsnd_dma *dma)
 static void rsnd_dma_complete(void *data)
 {
 	struct rsnd_dma *dma = (struct rsnd_dma *)data;
-	struct rsnd_priv *priv = dma->priv;
+	struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
 	unsigned long flags;
 
 	rsnd_lock(priv, flags);
@@ -172,7 +172,7 @@ static void rsnd_dma_complete(void *data)
 static void rsnd_dma_do_work(struct work_struct *work)
 {
 	struct rsnd_dma *dma = container_of(work, struct rsnd_dma, work);
-	struct rsnd_priv *priv = dma->priv;
+	struct rsnd_priv *priv = rsnd_mod_to_priv(rsnd_dma_to_mod(dma));
 	struct device *dev = rsnd_priv_to_dev(priv);
 	struct dma_async_tx_descriptor *desc;
 	dma_addr_t buf;
@@ -246,7 +246,6 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
 		goto rsnd_dma_init_err;
 
 	dma->dir = is_play ? DMA_TO_DEVICE : DMA_FROM_DEVICE;
-	dma->priv = priv;
 	dma->inquiry = inquiry;
 	dma->complete = complete;
 	INIT_WORK(&dma->work, rsnd_dma_do_work);

sound/soc/sh/rcar/rsnd.h

@@ -96,7 +96,6 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg,
  *	R-Car DMA
  */
 struct rsnd_dma {
-	struct rsnd_priv	*priv;
 	struct sh_dmae_slave	slave;
 	struct work_struct	work;
 	struct dma_chan		*chan;