From: Gergo Koteles <soyer@irl.hu>
Date: Fri, 8 Mar 2024 17:41:41 +0000 (+0100)
Subject: ALSA: hda/tas2781: add lock to system_suspend
X-Git-Tag: v6.6.23~137
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e965f1152b0c8e051308597d0e3885695ecd11f6;p=thirdparty%2Fkernel%2Fstable.git

ALSA: hda/tas2781: add lock to system_suspend

[ 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>
---

diff --git a/sound/pci/hda/tas2781_hda_i2c.c b/sound/pci/hda/tas2781_hda_i2c.c
index 1abe04e2685d9..afaa7ee171a7b 100644
--- a/sound/pci/hda/tas2781_hda_i2c.c
+++ b/sound/pci/hda/tas2781_hda_i2c.c
@@ -796,9 +796,13 @@ 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.