[PATCH 13/19] ASoC: codecs: wm5100: Propagate regcache_sync() errors

[Pengpeng Hou]

regcache_sync() can fail while replaying cached register state during
runtime resume. wm5100_runtime_resume() currently ignores that failure.

Propagate the error, restore cache-only/dirty state, and unwind the LDO
and core supplies acquired by runtime resume.

Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 sound/soc/codecs/wm5100.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm5100.c b/sound/soc/codecs/wm5100.c
index bd94fa53c362..2fe937a93026 100644
--- a/sound/soc/codecs/wm5100.c
+++ b/sound/soc/codecs/wm5100.c
@@ -2659,7 +2659,15 @@ static int wm5100_runtime_resume(struct device *dev)
 	}
 
 	regcache_cache_only(wm5100->regmap, false);
-	regcache_sync(wm5100->regmap);
+	ret = regcache_sync(wm5100->regmap);
+	if (ret) {
+		regcache_cache_only(wm5100->regmap, true);
+		regcache_mark_dirty(wm5100->regmap);
+		gpiod_set_value_cansleep(wm5100->ldo_ena, 0);
+		regulator_bulk_disable(ARRAY_SIZE(wm5100->core_supplies),
+				       wm5100->core_supplies);
+		return ret;
+	}
 
 	return 0;
 }
-- 
2.43.0