ASoC: rsnd: remove rsnd_dma_detach()

DMA mod is now connected to stream via rsnd_dai_connect().
This means DMA mod can use .remove for its clearance.
rsnd_dma_detach() is no longer needed.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/dma.c

@@ -698,17 +698,6 @@ int rsnd_dma_attach(struct rsnd_dai_stream *io, struct rsnd_mod *mod,
 	return 0;
 }
 
-void rsnd_dma_detach(struct rsnd_mod *mod, struct rsnd_mod **dma_mod)
-{
-	if (*dma_mod) {
-		struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
-		struct device *dev = rsnd_priv_to_dev(priv);
-
-		devm_kfree(dev, *dma_mod);
-		*dma_mod = NULL;
-	}
-}
-
 int rsnd_dma_probe(struct rsnd_priv *priv)
 {
 	struct platform_device *pdev = rsnd_priv_to_pdev(priv);

sound/soc/sh/rcar/rsnd.h

@@ -200,7 +200,6 @@ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io);
  */
 int rsnd_dma_attach(struct rsnd_dai_stream *io,
 		    struct rsnd_mod *mod, struct rsnd_mod **dma_mod);
-void rsnd_dma_detach(struct rsnd_mod *mod, struct rsnd_mod **dma_mod);
 int rsnd_dma_probe(struct rsnd_priv *priv);
 struct dma_chan *rsnd_dma_request_channel(struct device_node *of_node,
 					  struct rsnd_mod *mod, char *name);

sound/soc/sh/rcar/ssi.c

@@ -701,8 +701,6 @@ static int rsnd_ssi_dma_remove(struct rsnd_mod *mod,
 	/* PIO will request IRQ again */
 	free_irq(ssi->irq, mod);
 
-	rsnd_dma_detach(mod, &ssi->dma);
-
 	return 0;
 }