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ASoC: rt5645: Fix deadlock in rt5645_jack_detect_work()

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[ Upstream commit 6ef5d5b92f7117b324efaac72b3db27ae8bb3082 ]

There is a path in rt5645_jack_detect_work(), where rt5645->jd_mutex
is left locked forever. That may lead to deadlock
when rt5645_jack_detect_work() is called for the second time.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: cdba4301adda ("ASoC: rt5650: add mutex to avoid the jack detection failure")
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Link: https://lore.kernel.org/r/1707645514-21196-1-git-send-email-khoroshilov@ispras.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alexey Khoroshilov
2024-02-11 12:58:34 +03:00
committed by Greg Kroah-Hartman
parent 2ed13fda59
commit d14b8e2005
1 changed files with 1 additions and 0 deletions
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1
sound/soc/codecs/rt5645.c
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@@ -3288,6 +3288,7 @@ static void rt5645_jack_detect_work(struct work_struct *work)
report, SND_JACK_HEADPHONE);
snd_soc_jack_report(rt5645->mic_jack,
report, SND_JACK_MICROPHONE);
mutex_unlock(&rt5645->jd_mutex);
return;
case 4:
val = snd_soc_component_read(rt5645->component, RT5645_A_JD_CTRL1) & 0x0020;