Validate the topology input before we dereference the pointer.
Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com --- 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