[PATCH] ASoC: codecs: rt5645: Propagate regcache_sync() errors

[Pengpeng Hou]

Both rt5645_resume() and rt5645_sys_resume() leave cache-only mode and
replay cached register state, but both paths ignore regcache_sync()
failures and can report success.

Check both sync operations, return the error, and restore cache-
only/dirty state on failure.

Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 sound/soc/codecs/rt5645.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index e9819653b30d..93a4148ccccd 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3518,9 +3518,15 @@ static int rt5645_suspend(struct snd_soc_component *component)
 static int rt5645_resume(struct snd_soc_component *component)
 {
 	struct rt5645_priv *rt5645 = snd_soc_component_get_drvdata(component);
+	int ret;
 
 	regcache_cache_only(rt5645->regmap, false);
-	regcache_sync(rt5645->regmap);
+	ret = regcache_sync(rt5645->regmap);
+	if (ret) {
+		regcache_cache_only(rt5645->regmap, true);
+		regcache_mark_dirty(rt5645->regmap);
+		return ret;
+	}
 
 	return 0;
 }
@@ -4331,9 +4337,15 @@ static int rt5645_sys_suspend(struct device *dev)
 static int rt5645_sys_resume(struct device *dev)
 {
 	struct rt5645_priv *rt5645 = dev_get_drvdata(dev);
+	int ret;
 
 	regcache_cache_only(rt5645->regmap, false);
-	regcache_sync(rt5645->regmap);
+	ret = regcache_sync(rt5645->regmap);
+	if (ret) {
+		regcache_cache_only(rt5645->regmap, true);
+		regcache_mark_dirty(rt5645->regmap);
+		return ret;
+	}
 
 	if (rt5645->hp_jack) {
 		rt5645->jack_type = 0;
-- 
2.43.0