diff options
| author | Dmitry Osipenko <digetx@gmail.com> | 2020-01-06 04:47:07 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-01-06 23:44:25 +0300 |
| commit | 89b71b3f02d8ae5a08a1dd6f4a2098b7b868d498 (patch) | |
| tree | a4e6e345b4245e10dfeb4291c08fd94ec12fe8f6 | |
| parent | ff3b57417012fcc963ec281f5705bed837e4b1ac (diff) | |
| download | linux-89b71b3f02d8ae5a08a1dd6f4a2098b7b868d498.tar.xz | |
ASoC: rt5640: Fix NULL dereference on module unload
The rt5640->jack is NULL if jack is already disabled at the time of
driver's module unloading.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20200106014707.11378-1-digetx@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/codecs/rt5640.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c index adbae1f36a8a..747ca248bf10 100644 --- a/sound/soc/codecs/rt5640.c +++ b/sound/soc/codecs/rt5640.c @@ -2432,6 +2432,13 @@ static void rt5640_disable_jack_detect(struct snd_soc_component *component) { struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component); + /* + * soc_remove_component() force-disables jack and thus rt5640->jack + * could be NULL at the time of driver's module unloading. + */ + if (!rt5640->jack) + return; + disable_irq(rt5640->irq); rt5640_cancel_work(rt5640); |