[PATCH 6/9] ASoC: rt5682: stop jack resume after restore errors

[Pengpeng Hou]

rt5682_resume() ignores cache replay and headset register update
failures, then clears the jack state, schedules jack detection and
enables the IRQ. The published jack work can therefore run against a
partially restored codec.

Check cache synchronization and each fallible headset register update
before publishing jack work or enabling the IRQ. Return the first error
to the ASoC component wrapper, which reports it while retaining
best-effort card resume. The successful resume order is unchanged and no
rollback is attempted after a partial register update.

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

Fixes: 0ddce71c21f0 ("ASoC: rt5682: add rt5682 codec driver")
Assisted-by: gpt 5
Signed-off-by: Pengpeng Hou <hppiscas@xxxxxxx>
---
 sound/soc/codecs/rt5682.c | 37 ++++++++++++++++++++++++++++---------
 1 file changed, 28 insertions(+), 9 deletions(-)

diff --git a/sound/soc/codecs/rt5682.c b/sound/soc/codecs/rt5682.c
index 6f7e68c20d13..59c3f8b7a600 100644
--- a/sound/soc/codecs/rt5682.c
+++ b/sound/soc/codecs/rt5682.c
@@ -3010,23 +3010,42 @@ static int rt5682_suspend(struct snd_soc_component *component)
 static int rt5682_resume(struct snd_soc_component *component)
 {
 	struct rt5682_priv *rt5682 = snd_soc_component_get_drvdata(component);
+	int ret;
 
 	if (rt5682->is_sdw)
 		return 0;
 
 	regcache_cache_only(rt5682->regmap, false);
-	regcache_sync(rt5682->regmap);
+	ret = regcache_sync(rt5682->regmap);
+	if (ret)
+		return ret;
 
 	if (rt5682->hs_jack && (rt5682->jack_type & SND_JACK_HEADSET) == SND_JACK_HEADSET) {
-		snd_soc_component_update_bits(component, RT5682_SAR_IL_CMD_1,
-			RT5682_SAR_BUTDET_MODE_MASK | RT5682_SAR_SEL_MB1_MB2_MASK,
-			RT5682_SAR_BUTDET_POW_NORM | RT5682_SAR_SEL_MB1_MB2_AUTO);
+		ret = snd_soc_component_update_bits(component,
+						    RT5682_SAR_IL_CMD_1,
+						    RT5682_SAR_BUTDET_MODE_MASK |
+						    RT5682_SAR_SEL_MB1_MB2_MASK,
+						    RT5682_SAR_BUTDET_POW_NORM |
+						    RT5682_SAR_SEL_MB1_MB2_AUTO);
+		if (ret < 0)
+			return ret;
+
 		usleep_range(5000, 6000);
-		snd_soc_component_update_bits(component, RT5682_CBJ_CTRL_1,
-			RT5682_MB1_PATH_MASK | RT5682_MB2_PATH_MASK,
-			RT5682_CTRL_MB1_FSM | RT5682_CTRL_MB2_FSM);
-		snd_soc_component_update_bits(component, RT5682_PWR_ANLG_3,
-			RT5682_PWR_CBJ, RT5682_PWR_CBJ);
+		ret = snd_soc_component_update_bits(component,
+						    RT5682_CBJ_CTRL_1,
+						    RT5682_MB1_PATH_MASK |
+						    RT5682_MB2_PATH_MASK,
+						    RT5682_CTRL_MB1_FSM |
+						    RT5682_CTRL_MB2_FSM);
+		if (ret < 0)
+			return ret;
+
+		ret = snd_soc_component_update_bits(component,
+						    RT5682_PWR_ANLG_3,
+						    RT5682_PWR_CBJ,
+						    RT5682_PWR_CBJ);
+		if (ret < 0)
+			return ret;
 	}
 
 	rt5682->jack_type = 0;
-- 
2.50.1 (Apple Git-155)