[PATCH 07/14] ASoC: mediatek: mt8195: Fix runtime resume error handling

[phucduc.bui at gmail.com]

From: bui duc phuc <phucduc.bui at gmail.com>

Check and propagate errors when enabling the register access and main
clocks during runtime resume.

If regcache_sync() or main clock enable fails, restore regmap cache-only
mode and disable the register access clocks before returning the error.

Fixes: 6746cc858259 ("ASoC: mediatek: mt8195: add platform driver")
Signed-off-by: bui duc phuc <phucduc.bui at gmail.com>
---
 sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 23 +++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c
index 5e76625915a5..be150c0f5472 100644
--- a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c
+++ b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c
@@ -2958,18 +2958,31 @@ static int mt8195_afe_runtime_resume(struct device *dev)
 {
 	struct mtk_base_afe *afe = dev_get_drvdata(dev);
 	struct mt8195_afe_private *afe_priv = afe->platform_priv;
+	int ret;
 
-	mt8195_afe_enable_reg_rw_clk(afe);
+	ret = mt8195_afe_enable_reg_rw_clk(afe);
+	if (ret)
+		return ret;
 
 	if (!afe->regmap || afe_priv->pm_runtime_bypass_reg_ctl)
-		goto skip_regmap;
+		return 0;
 
 	regcache_cache_only(afe->regmap, false);
-	regcache_sync(afe->regmap);
+	ret = regcache_sync(afe->regmap);
+	if (ret)
+		goto err_restore_cache;
+
+	ret = mt8195_afe_enable_main_clock(afe);
+	if (ret)
+		goto err_restore_cache;
 
-	mt8195_afe_enable_main_clock(afe);
-skip_regmap:
 	return 0;
+
+err_restore_cache:
+	regcache_cache_only(afe->regmap, true);
+	mt8195_afe_disable_reg_rw_clk(afe);
+
+	return ret;
 }
 
 static int init_memif_priv_data(struct mtk_base_afe *afe)
-- 
2.43.0