[PATCH 6.12.y 4/4] ASoC: mediatek: mt8183: Check runtime resume during probe

[Sasha Levin <sashal@kernel.org>]

From: Cássio Gabriel <cassiogabrielcontato@gmail.com>

[ Upstream commit f0334fbfd107682d0c95f3f71e25f6127038e2b9 ]

The MT8183 AFE probe uses pm_runtime_get_sync() before reading hardware
defaults into the regmap cache, but does not check whether runtime resume
failed. If regmap_reinit_cache() then fails, the temporary runtime PM
usage count is also not released.

Use pm_runtime_resume_and_get() so resume failures abort probe without
leaking a usage count, and release the temporary reference before
handling the regmap cache result.

Fixes: a94aec035a12 ("ASoC: mediatek: mt8183: add platform driver")
Cc: stable@vger.kernel.org
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Link: https://patch.msgid.link/20260527-asoc-mt8183-probe-cleanup-v1-2-4f4f5593c8d1@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/mediatek/mt8183/mt8183-afe-pcm.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c b/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c
index 7f644c8249630e..9d68d56d47cc77 100644
--- a/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c
+++ b/sound/soc/mediatek/mt8183/mt8183-afe-pcm.c
@@ -1015,17 +1015,21 @@ static int mt8183_afe_pcm_dev_probe(struct platform_device *pdev)
 
 	/* enable clock for regcache get default value from hw */
 	afe_priv->pm_runtime_bypass_reg_ctl = true;
-	pm_runtime_get_sync(dev);
-
-	ret = regmap_reinit_cache(afe->regmap, &mt8183_afe_regmap_config);
+	ret = pm_runtime_resume_and_get(dev);
 	if (ret) {
-		dev_err(dev, "regmap_reinit_cache fail, ret %d\n", ret);
+		afe_priv->pm_runtime_bypass_reg_ctl = false;
 		goto err_pm_disable;
 	}
 
+	ret = regmap_reinit_cache(afe->regmap, &mt8183_afe_regmap_config);
 	pm_runtime_put_sync(dev);
 	afe_priv->pm_runtime_bypass_reg_ctl = false;
 
+	if (ret) {
+		dev_err(dev, "regmap_reinit_cache fail, ret %d\n", ret);
+		goto err_pm_disable;
+	}
+
 	regcache_cache_only(afe->regmap, true);
 	regcache_mark_dirty(afe->regmap);
 
-- 
2.53.0