Validate the topology input before we dereference the pointer.
Signed-off-by: Liam Girdwood <liam.r.girdwood@xxxxxxxxxxxxxxx>
---
sound/soc/soc-topology.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index b1970a05ba44..b578bc938118 100644
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -517,7 +517,7 @@ static void remove_widget(struct snd_soc_component *comp,
*/
if (dobj->widget.kcontrol_type == SND_SOC_TPLG_TYPE_ENUM) {
/* enumerated widget mixer */
- for (i = 0; i < w->num_kcontrols; i++) {
+ for (i = 0; w->kcontrols != NULL && i < w->num_kcontrols; i++) {
struct snd_kcontrol *kcontrol = w->kcontrols[i];
struct soc_enum *se =
(struct soc_enum *)kcontrol->private_value;
@@ -534,7 +534,7 @@ static void remove_widget(struct snd_soc_component *comp,
}
} else {
/* volume mixer or bytes controls */
- for (i = 0; i < w->num_kcontrols; i++) {
+ for (i = 0; w->kcontrols != NULL && i < w->num_kcontrols; i++) {
struct snd_kcontrol *kcontrol = w->kcontrols[i];
if (dobj->widget.kcontrol_type
--
2.14.1
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