| Message ID | 20210112101725.44200-1-hdegoede@redhat.com |
|---|---|
| State | Accepted |
| Commit | f2973a1de9d9890b6ac712fb1825d3449ee9cc93 |
| Headers | show |
| Series | ASoC: es8316: Fix possible NULL pointer deref in es8316_disable_jack_detect() | expand |
diff --git a/sound/soc/codecs/es8316.c b/sound/soc/codecs/es8316.c index f9ec5cf82599..1ce84f12a4cf 100644 --- a/sound/soc/codecs/es8316.c +++ b/sound/soc/codecs/es8316.c @@ -681,6 +681,9 @@ static void es8316_disable_jack_detect(struct snd_soc_component *component) { struct es8316_priv *es8316 = snd_soc_component_get_drvdata(component); + if (!es8316->jack) + return; /* Already disabled (or never enabled) */ + disable_irq(es8316->irq); mutex_lock(&es8316->lock);
sound/soc/soc-core.c: soc_remove_component() unconditionally calls snd_soc_component_set_jack(component, NULL, NULL); on any components being removed. This means that on machines where the machine-driver does not provide a jack through snd_soc_component_set_jack() es8316_disable_jack_detect() will still get called and at this time es8316->jack will be NULL and the es8316->jack->status check in es8316_disable_jack_detect() will lead to a NULL pointer deref. Fix this by checking for es8316->jack bein NULL at the start of es8316_disable_jack_detect() and turn the function into a no-op in that case. Cc: russianneuromancer <russianneuromancer@ya.ru> Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- sound/soc/codecs/es8316.c | 3 +++ 1 file changed, 3 insertions(+)