[PATCH 15/19] ASoC: codecs: cs4349: Propagate regcache_sync() errors

[Pengpeng Hou]

regcache_sync() can fail while replaying cached register state during
runtime resume. cs4349_runtime_resume() currently ignores that failure
and returns success.

Propagate the error, restore cache-only/dirty state, and hold reset low
again on sync failure.

Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 sound/soc/codecs/cs4349.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/cs4349.c b/sound/soc/codecs/cs4349.c
index 6ac6d306b054..9a7f70175717 100644
--- a/sound/soc/codecs/cs4349.c
+++ b/sound/soc/codecs/cs4349.c
@@ -340,7 +340,13 @@ static int cs4349_runtime_resume(struct device *dev)
 	gpiod_set_value_cansleep(cs4349->reset_gpio, 1);
 
 	regcache_cache_only(cs4349->regmap, false);
-	regcache_sync(cs4349->regmap);
+	ret = regcache_sync(cs4349->regmap);
+	if (ret) {
+		regcache_cache_only(cs4349->regmap, true);
+		regcache_mark_dirty(cs4349->regmap);
+		gpiod_set_value_cansleep(cs4349->reset_gpio, 0);
+		return ret;
+	}
 
 	return 0;
 }
-- 
2.43.0