ASoC: Intel: Skylake: skl-topology: fix -frame-larger-than

sound/soc/intel/skylake/skl-topology.c:3613:13: warning: stack frame
size of 1304 bytes in function 'skl_tplg_complete'
[-Wframe-larger-than=]

struct snd_ctl_elem_value is 1224 bytes in my configuration.

Heap allocate it, then free it within the current frame.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Link: https://lore.kernel.org/r/20210315013908.217219-1-nick.desaulniers@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/skylake/skl-topology.c

@@ -3613,10 +3613,15 @@ static int skl_manifest_load(struct snd_soc_component *cmpnt, int index,
 static void skl_tplg_complete(struct snd_soc_component *component)
 {
 	struct snd_soc_dobj *dobj;
-	struct snd_soc_acpi_mach *mach =
-		dev_get_platdata(component->card->dev);
+	struct snd_soc_acpi_mach *mach;
+	struct snd_ctl_elem_value *val;
 	int i;
 
+	val = kmalloc(sizeof(*val), GFP_KERNEL);
+	if (!val)
+		return;
+
+	mach = dev_get_platdata(component->card->dev);
 	list_for_each_entry(dobj, &component->dobj_list, list) {
 		struct snd_kcontrol *kcontrol = dobj->control.kcontrol;
 		struct soc_enum *se;
@@ -3632,14 +3637,14 @@ static void skl_tplg_complete(struct snd_soc_component *component)
 		sprintf(chan_text, "c%d", mach->mach_params.dmic_num);
 
 		for (i = 0; i < se->items; i++) {
-			struct snd_ctl_elem_value val = {};
-
 			if (strstr(texts[i], chan_text)) {
-				val.value.enumerated.item[0] = i;
-				kcontrol->put(kcontrol, &val);
+				memset(val, 0, sizeof(*val));
+				val->value.enumerated.item[0] = i;
+				kcontrol->put(kcontrol, val);
 			}
 		}
 	}
+	kfree(val);
 }
 
 static struct snd_soc_tplg_ops skl_tplg_ops  = {