linux-kernel - [PATCH v2 1/2] ASoC: ak4458: Disable regulator when error happens

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251203100529.3841203-2-shengjiu.wang@nxp.com>
Date: Wed,  3 Dec 2025 18:05:28 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: lgirdwood@...il.com,
	broonie@...nel.org,
	perex@...ex.cz,
	tiwai@...e.com,
	andriy.shevchenko@...ux.intel.com,
	kuninori.morimoto.gx@...esas.com,
	nichen@...as.ac.cn,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	ckeepax@...nsource.cirrus.com
Subject: [PATCH v2 1/2] ASoC: ak4458: Disable regulator when error happens

Disable regulator in runtime resume when error happens to balance
the reference count of regulator.

Fixes: 7e3096e8f823 ("ASoC: ak4458: Add regulator support")
Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/codecs/ak4458.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/ak4458.c b/sound/soc/codecs/ak4458.c
index 893071d7a57f..f81cd8cebdd8 100644
--- a/sound/soc/codecs/ak4458.c
+++ b/sound/soc/codecs/ak4458.c
@@ -671,7 +671,15 @@ static int ak4458_runtime_resume(struct device *dev)
 	regcache_cache_only(ak4458->regmap, false);
 	regcache_mark_dirty(ak4458->regmap);
 
-	return regcache_sync(ak4458->regmap);
+	ret = regcache_sync(ak4458->regmap);
+	if (ret)
+		goto err;
+
+	return 0;
+err:
+	regcache_cache_only(ak4458->regmap, true);
+	regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies), ak4458->supplies);
+	return ret;
 }
 
 static const struct snd_soc_component_driver soc_codec_dev_ak4458 = {
-- 
2.34.1