[PATCH 6.8 540/715] ALSA: hda/tas2781: add lock to system_suspend

Sasha Levin
2024-03-24T22:43:53Z

From: Gergo Koteles <soyer@irl.hu>

[ Upstream commit c58e6ed55a1bb9811d6d936d001b068bb0419467 ]

Add the missing lock around tasdevice_tuning_switch().

Fixes: 5be27f1e3ec9 ("ALSA: hda/tas2781: Add tas2781 HDA driver")
Signed-off-by: Gergo Koteles <soyer@irl.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Message-ID: <c666da13d4bc48cd1ab1357479e0c6096541372c.1709918447.git.soyer@irl.hu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/pci/hda/tas2781_hda_i2c.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
index ee3e0afc9b313..750e49fbb91e5 100644
--- a/sound/pci/hda/tas2781_hda_i2c.c
+++ b/sound/pci/hda/tas2781_hda_i2c.c
@@ -885,9 +885,13 @@ static int tas2781_system_suspend(struct device *dev)
if (ret)
return ret;

+ mutex_lock(&tas_hda->priv->codec_lock);
+
/* Shutdown chip before system suspend */
tasdevice_tuning_switch(tas_hda->priv, 1);

+ mutex_unlock(&tas_hda->priv->codec_lock);
+
/*
* Reset GPIO may be shared, so cannot reset here.
* However beyond this point, amps may be powered down.
--
2.43.0