forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

ASoC: wm8994: Fix potential deadlock

Browse source 
[ Upstream commit 9529dc167f ]

Fix this by dropping wm8994->accdet_lock while calling
cancel_delayed_work_sync(&wm8994->mic_work) in wm1811_jackdet_irq().

Fixes: c0cc3f1665 ("ASoC: wm8994: Allow a delay between jack insertion and microphone detect")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20221209091657.1183-1-m.szyprowski@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Marek Szyprowski 2022-12-09 10:16:57 +01:00 • committed by Greg Kroah-Hartman
commit c0ae46693b
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
sound/soc/codecs/wm8994.c
View file

@ -3853,7 +3853,12 @@ static irqreturn_t wm1811_jackdet_irq(int irq, void *data)
} else {
dev_dbg(component->dev, "Jack not detected\n");
/* Release wm8994->accdet_lock to avoid deadlock:
* cancel_delayed_work_sync() takes wm8994->mic_work internal
* lock and wm1811_mic_work takes wm8994->accdet_lock */
mutex_unlock(&wm8994->accdet_lock);
cancel_delayed_work_sync(&wm8994->mic_work);
mutex_lock(&wm8994->accdet_lock);
snd_soc_component_update_bits(component, WM8958_MICBIAS2,
WM8958_MICB2_DISCH, WM8958_MICB2_DISCH);