Commit f53c4c20 authored by Liam Girdwood's avatar Liam Girdwood Committed by Mark Brown

ASoC: topology: Check widget kcontrols before deref

Validate the topology input before we dereference the pointer.
Signed-off-by: default avatarLiam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent feb12f0c
......@@ -513,7 +513,7 @@ 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;
......@@ -530,7 +530,7 @@ 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
......
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