[PATCH] ASoC: codecs: max98390: Propagate regcache_sync() errors

[Pengpeng Hou]

regcache_sync() can fail while replaying cached register state during
resume. max98390_resume() currently ignores that failure and returns
success.

Propagate the error and restore cache-only/dirty state on failure.

Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 sound/soc/codecs/max98390.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/max98390.c b/sound/soc/codecs/max98390.c
index 2bbedf84ee5d..66309e87fdbd 100644
--- a/sound/soc/codecs/max98390.c
+++ b/sound/soc/codecs/max98390.c
@@ -952,11 +952,17 @@ static int max98390_suspend(struct device *dev)
 static int max98390_resume(struct device *dev)
 {
 	struct max98390_priv *max98390 = dev_get_drvdata(dev);
+	int ret;
 
 	dev_dbg(dev, "%s:Enter\n", __func__);
 
 	regcache_cache_only(max98390->regmap, false);
-	regcache_sync(max98390->regmap);
+	ret = regcache_sync(max98390->regmap);
+	if (ret) {
+		regcache_cache_only(max98390->regmap, true);
+		regcache_mark_dirty(max98390->regmap);
+		return ret;
+	}
 
 	return 0;
 }
-- 
2.43.0