[PATCH 3/9] ASoC: nau8825: stop resume when cache sync fails

[Pengpeng Hou <hppiscas@163.com>]

nau8825_resume() restores cached registers during component resume but
ignores a regcache_sync() failure and continues with crosstalk semaphore
handling and IRQ enablement. Those operations assume that the codec
register state has already been restored.

Stop the local resume sequence when cache replay fails and return the
error to the ASoC component wrapper. The wrapper reports the failure
while retaining best-effort card resume, so no rollback or retry
semantics are introduced.

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

Fixes: 4454a8378be5 ("ASoC: nau8825: add pm function")
Assisted-by: gpt 5
Signed-off-by: Pengpeng Hou <hppiscas@163.com>
---
 sound/soc/codecs/nau8825.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c
index ae83b778bf93..c770a345f3cf 100644
--- a/sound/soc/codecs/nau8825.c
+++ b/sound/soc/codecs/nau8825.c
@@ -2690,7 +2690,10 @@ static int __maybe_unused nau8825_resume(struct snd_soc_component *component)
 	int ret;
 
 	regcache_cache_only(nau8825->regmap, false);
-	regcache_sync(nau8825->regmap);
+	ret = regcache_sync(nau8825->regmap);
+	if (ret)
+		return ret;
+
 	nau8825->xtalk_protect = true;
 	ret = nau8825_sema_acquire(nau8825, 0);
 	if (ret)
-- 
2.50.1 (Apple Git-155)