[PATCH 2/4] ASoC: es8375: report resume restore errors

[Pengpeng Hou]

es8375_resume() ignores the clock-status read, bias restoration and
register-cache replay. A read failure can leave reg uninitialized before
it selects the initialization path, and later resume processing cannot
observe a failed restore.

Return the fallible operation results to the ASoC component wrapper, which
reports callback failures while retaining its best-effort resume contract.

The issue was found by our static-analysis tool and manually reviewed.

Fixes: de2b3119f9f7 ("ASoC: codecs: add support for ES8375")
Assisted-by: gpt 5
Signed-off-by: Pengpeng Hou <hppiscas@xxxxxxx>
---
 sound/soc/codecs/es8375.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/sound/soc/codecs/es8375.c b/sound/soc/codecs/es8375.c
index e8747bc24433..2c58225feddd 100644
--- a/sound/soc/codecs/es8375.c
+++ b/sound/soc/codecs/es8375.c
@@ -577,20 +577,24 @@ static int es8375_resume(struct snd_soc_component *component)
 {
 	struct es8375_priv *es8375 = snd_soc_component_get_drvdata(component);
 	unsigned int reg;
+	int ret;
 
 	regcache_cache_only(es8375->regmap, false);
 	regcache_cache_bypass(es8375->regmap, true);
-	regmap_read(es8375->regmap, ES8375_CLK_MGR2, &reg);
+	ret = regmap_read(es8375->regmap, ES8375_CLK_MGR2, &reg);
 	regcache_cache_bypass(es8375->regmap, false);
+	if (ret)
+		return ret;
 
-	if (reg == 0x00)
+	if (reg == 0x00) {
 		es8375_init(component);
-	else
-		es8375_set_bias_level(component, SND_SOC_BIAS_ON);
-
-	regcache_sync(es8375->regmap);
+	} else {
+		ret = es8375_set_bias_level(component, SND_SOC_BIAS_ON);
+		if (ret)
+			return ret;
+	}
 
-	return 0;
+	return regcache_sync(es8375->regmap);
 }
 
 static int es8375_codec_probe(struct snd_soc_component *component)
-- 
2.50.1 (Apple Git-155)