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.
Suggested-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Nick Desaulniers <nick.desaulniers@xxxxxxxxx>
---
Changes V2 -> V3:
* change to kmalloc+memset to fix logic error, as per Andy.
Changes V1 -> V2:
* rebased on mainline.
sound/soc/intel/skylake/skl-topology.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/sound/soc/intel/skylake/skl-topology.c b/sound/soc/intel/skylake/skl-topology.c
index b824086203b9..c0fdab39e7c2 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 = 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 = {
base-commit: 88fe49249c99de14e543c632a46248d85411ab9e
--
2.25.1
