[PATCH 10/19] ASoC: codecs: wcd938x-sdw: Propagate regcache_sync() errors

[Pengpeng Hou]

regcache_sync() can fail while replaying cached register state during
runtime resume. wcd938x_sdw_runtime_resume() currently ignores that
failure.

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

Signed-off-by: Pengpeng Hou <pengpeng@xxxxxxxxxxx>
---
 sound/soc/codecs/wcd938x-sdw.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wcd938x-sdw.c b/sound/soc/codecs/wcd938x-sdw.c
index 0f0cc0ac3056..e5ad368418a2 100644
--- a/sound/soc/codecs/wcd938x-sdw.c
+++ b/sound/soc/codecs/wcd938x-sdw.c
@@ -1245,10 +1245,16 @@ static int wcd938x_sdw_runtime_suspend(struct device *dev)
 static int wcd938x_sdw_runtime_resume(struct device *dev)
 {
 	struct wcd938x_sdw_priv *wcd = dev_get_drvdata(dev);
+	int ret;
 
 	if (wcd->regmap) {
 		regcache_cache_only(wcd->regmap, false);
-		regcache_sync(wcd->regmap);
+		ret = regcache_sync(wcd->regmap);
+		if (ret) {
+			regcache_cache_only(wcd->regmap, true);
+			regcache_mark_dirty(wcd->regmap);
+			return ret;
+		}
 	}
 
 	pm_runtime_mark_last_busy(dev);
-- 
2.43.0