ALSA: hda/tas2781: add lock to system_suspend

BugLink: https://bugs.launchpad.net/bugs/2060097

[ Upstream commit c58e6ed55a1bb9811d6d936d001b068bb0419467 ]

Add the missing lock around tasdevice_tuning_switch().

Fixes: 5be27f1e3e ("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>
(cherry picked from commit dd68ea813d0a996e73bce4c7ca15c5f078659bee)
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

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.