ASoC: dapm: Remove unused long_name field from snd_soc_dapm_path struct

Since commit 85762e71 ("ASoC: dapm: Implement mixer control sharing") the
long_name field of the snd_soc_dapm_path struct is unused. All of the name
handling now happens entirely in dapm_create_or_share_mixmux_kcontrol(). So we
can remove the long_name field from the snd_soc_dapm_path struct.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

include/sound/soc-dapm.h

@@ -478,7 +478,6 @@ struct snd_soc_dapm_route {
 /* dapm audio path between two widgets */
 struct snd_soc_dapm_path {
 	const char *name;
-	const char *long_name;
 
 	/* source (input) and sink (output) widgets */
 	struct snd_soc_dapm_widget *source;

sound/soc/soc-dapm.c

@@ -621,17 +621,15 @@ static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
 		kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], wlist, name,
 					prefix);
 		kcontrol->private_free = dapm_kcontrol_free;
+		kfree(long_name);
 		ret = snd_ctl_add(card, kcontrol);
 		if (ret < 0) {
 			dev_err(dapm->dev,
 				"ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
 				w->name, name, ret);
 			kfree(wlist);
-			kfree(long_name);
 			return ret;
 		}
-
-		path->long_name = long_name;
 	}
 
 	kcontrol->private_data = wlist;
@@ -2110,7 +2108,6 @@ static void dapm_free_path(struct snd_soc_dapm_path *path)
 	list_del(&path->list_sink);
 	list_del(&path->list_source);
 	list_del(&path->list);
-	kfree(path->long_name);
 	kfree(path);
 }