ASoC: rsnd: remove unused rsnd_dma_available()

rsnd_dma_available() is not used. Let's remove it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/core.c

@@ -222,11 +222,6 @@ void rsnd_dma_start(struct rsnd_dma *dma)
 	dma_async_issue_pending(dma->chan);
 }
 
-int rsnd_dma_available(struct rsnd_dma *dma)
-{
-	return !!dma->chan;
-}
-
 #define DMA_NAME_SIZE 16
 #define MOD_MAX 4 /* MEM/SSI/SRC/DVC */
 static int _rsnd_dma_of_name(char *dma_name, struct rsnd_mod *mod)

sound/soc/sh/rcar/rsnd.h

@@ -178,7 +178,6 @@ struct rsnd_dma {
 
 void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
-int rsnd_dma_available(struct rsnd_dma *dma);
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_priv *priv,
 		    struct rsnd_dma *dma);

sound/soc/sh/rcar/src.c

@@ -30,8 +30,6 @@ struct rsnd_src {
 #define rsnd_src_convert_rate(p) ((p)->info->convert_rate)
 #define rsnd_mod_to_src(_mod)				\
 	container_of((_mod), struct rsnd_src, mod)
-#define rsnd_src_dma_available(src) \
-	rsnd_dma_available(rsnd_mod_to_dma(&(src)->mod))
 
 #define for_each_rsnd_src(pos, priv, i)				\
 	for ((i) = 0;						\

sound/soc/sh/rcar/ssi.c

@@ -80,8 +80,6 @@ struct rsnd_ssi {
 #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod)
 #define rsnd_dma_to_ssi(dma)  rsnd_mod_to_ssi(rsnd_dma_to_mod(dma))
 #define rsnd_ssi_pio_available(ssi) ((ssi)->info->irq > 0)
-#define rsnd_ssi_dma_available(ssi) \
-	rsnd_dma_available(rsnd_mod_to_dma(&(ssi)->mod))
 #define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent)
 #define rsnd_ssi_mode_flags(p) ((p)->info->flags)
 #define rsnd_ssi_dai_id(ssi) ((ssi)->info->dai_id)