[PATCH 07/19] ASoC: codecs: rt9120: Propagate regcache_sync() errors

[Pengpeng Hou]

regcache_sync() can fail while replaying cached register state after
runtime resume. rt9120_runtime_resume() currently ignores that failure
and returns success.

Propagate the error, restore cache-only/dirty state, and power the
device back down on sync failure.

Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 sound/soc/codecs/rt9120.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt9120.c b/sound/soc/codecs/rt9120.c
index 97f56af25577..e51cd4a31894 100644
--- a/sound/soc/codecs/rt9120.c
+++ b/sound/soc/codecs/rt9120.c
@@ -606,12 +606,19 @@ static int rt9120_runtime_suspend(struct device *dev)
 static int rt9120_runtime_resume(struct device *dev)
 {
 	struct rt9120_data *data = dev_get_drvdata(dev);
+	int ret;
 
 	if (data->pwdnn_gpio) {
 		gpiod_set_value(data->pwdnn_gpio, 1);
 		msleep(RT9120_CHIPON_WAITMS);
 		regcache_cache_only(data->regmap, false);
-		regcache_sync(data->regmap);
+		ret = regcache_sync(data->regmap);
+		if (ret) {
+			regcache_cache_only(data->regmap, true);
+			regcache_mark_dirty(data->regmap);
+			gpiod_set_value(data->pwdnn_gpio, 0);
+			return ret;
+		}
 	}
 
 	return 0;
-- 
2.43.0