5.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
[ 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@xxxxxxxxx>
Link: https://lore.kernel.org/r/1707645514-21196-1-git-send-email-khoroshilov@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/soc/codecs/rt5645.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index c9512e97c12e..88093e58dd84 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3276,6 +3276,7 @@ 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_read32(rt5645->component, RT5645_A_JD_CTRL1) & 0x0020;
--
2.43.0
