ASoC: rt5640: Fix NULL dereference on module unload
[ Upstream commit 89b71b3f02
]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -2432,6 +2432,13 @@ static void rt5640_disable_jack_detect(struct snd_soc_component *component)
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{
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struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
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/*
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* soc_remove_component() force-disables jack and thus rt5640->jack
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* could be NULL at the time of driver's module unloading.
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*/
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if (!rt5640->jack)
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return;
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disable_irq(rt5640->irq);
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rt5640_cancel_work(rt5640);
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