[PATCH] ASoC: Intel: Skylake: skl-topology: fix -frame-larger-than

[Nick Desaulniers]

Fixes:
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.

Signed-off-by: Nick Desaulniers <nick.desaulni...@gmail.com>
---
 sound/soc/intel/skylake/skl-topology.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/sound/soc/intel/skylake/skl-topology.c 
b/sound/soc/intel/skylake/skl-topology.c
index ae466cd59292..cdc916c91301 100644
--- a/sound/soc/intel/skylake/skl-topology.c
+++ b/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 = kzalloc(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 =
@@ -3631,14 +3636,13 @@ 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);
+                               val->value.enumerated.item[0] = i;
+                               kcontrol->put(kcontrol, val);
                        }
                }
        }
+       kfree(val);
 }
 
 static struct snd_soc_tplg_ops skl_tplg_ops  = {

base-commit: 65f0d2414b7079556fbbcc070b3d1c9f9587606d
prerequisite-patch-id: 4d05aad8c2b50c0c3b4447dd842abe8b1b840927
-- 
2.25.1