ALSA: hda - Make snd_hda_gen_spec_free() static

The last user of snd_hda_gen_spec_free() is patch_via.c, and we can
rewrite it safely with snd_hda_gen_free(), so that
snd_hda_gen_spec_free() can be a local function in hda_generic.c.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_generic.c

@@ -79,7 +79,7 @@ static void free_kctls(struct hda_gen_spec *spec)
 	snd_array_free(&spec->kctls);
 }
 
-void snd_hda_gen_spec_free(struct hda_gen_spec *spec)
+static void snd_hda_gen_spec_free(struct hda_gen_spec *spec)
 {
 	if (!spec)
 		return;
@@ -87,7 +87,6 @@ void snd_hda_gen_spec_free(struct hda_gen_spec *spec)
 	snd_array_free(&spec->paths);
 	snd_array_free(&spec->loopback_list);
 }
-EXPORT_SYMBOL_GPL(snd_hda_gen_spec_free);
 
 /*
  * store user hints

sound/pci/hda/hda_generic.h

@@ -296,7 +296,6 @@ struct hda_gen_spec {
 };
 
 int snd_hda_gen_spec_init(struct hda_gen_spec *spec);
-void snd_hda_gen_spec_free(struct hda_gen_spec *spec);
 
 int snd_hda_gen_init(struct hda_codec *codec);
 void snd_hda_gen_free(struct hda_codec *codec);

sound/pci/hda/patch_via.c

@@ -465,14 +465,8 @@ static void via_playback_pcm_hook(struct hda_pcm_stream *hinfo,
 
 static void via_free(struct hda_codec *codec)
 {
-	struct via_spec *spec = codec->spec;
-
-	if (!spec)
-		return;
-
 	vt1708_stop_hp_work(codec);
-	snd_hda_gen_spec_free(&spec->gen);
-	kfree(spec);
+	snd_hda_gen_free(codec);
 }
 
 #ifdef CONFIG_PM