ASoC: rcar: remove rsnd_kctrl_remove()

Current rcar driver is trying to remove kctrl when remove time.
But, 1) rcar driver can't/shouldn't remove before removing sound
card driver, 2) sound card driver will call snd_ctl_dev_free()
and removes all kctrls by snd_ctl_remove().
Thus, rsnd_kctrl_remove() is not necessary. Current implementation
will get Oops when removing rcar driver after sound card.
This patch fix this issue.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/core.c

@@ -1039,15 +1039,6 @@ static int __rsnd_kctrl_new(struct rsnd_mod *mod,
 	return 0;
 }
 
-void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg)
-{
-	if (cfg->card && cfg->kctrl)
-		snd_ctl_remove(cfg->card, cfg->kctrl);
-
-	cfg->card = NULL;
-	cfg->kctrl = NULL;
-}
-
 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
 		     struct rsnd_dai_stream *io,
 		     struct snd_soc_pcm_runtime *rtd,

sound/soc/sh/rcar/dvc.c

@@ -218,21 +218,6 @@ static int rsnd_dvc_probe_(struct rsnd_mod *mod,
 	return rsnd_cmd_attach(io, rsnd_mod_id(mod));
 }
 
-static int rsnd_dvc_remove_(struct rsnd_mod *mod,
-			    struct rsnd_dai_stream *io,
-			    struct rsnd_priv *priv)
-{
-	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
-
-	rsnd_kctrl_remove(dvc->volume);
-	rsnd_kctrl_remove(dvc->mute);
-	rsnd_kctrl_remove(dvc->ren);
-	rsnd_kctrl_remove(dvc->rup);
-	rsnd_kctrl_remove(dvc->rdown);
-
-	return 0;
-}
-
 static int rsnd_dvc_init(struct rsnd_mod *mod,
 			 struct rsnd_dai_stream *io,
 			 struct rsnd_priv *priv)
@@ -332,7 +317,6 @@ static struct rsnd_mod_ops rsnd_dvc_ops = {
 	.name		= DVC_NAME,
 	.dma_req	= rsnd_dvc_dma_req,
 	.probe		= rsnd_dvc_probe_,
-	.remove		= rsnd_dvc_remove_,
 	.init		= rsnd_dvc_init,
 	.quit		= rsnd_dvc_quit,
 	.pcm_new	= rsnd_dvc_pcm_new,

sound/soc/sh/rcar/rsnd.h

@@ -611,9 +611,6 @@ struct rsnd_kctrl_cfg_s {
 	u32 val;
 };
 
-void _rsnd_kctrl_remove(struct rsnd_kctrl_cfg *cfg);
-#define rsnd_kctrl_remove(_cfg)	_rsnd_kctrl_remove(&((_cfg).cfg))
-
 int rsnd_kctrl_new_m(struct rsnd_mod *mod,
 		     struct rsnd_dai_stream *io,
 		     struct snd_soc_pcm_runtime *rtd,