[PATCH 12/14] ASoC: mediatek: mt8195: Fix HDMI TX startup error handling

[phucduc.bui at gmail.com]

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

Check and propagate errors when enabling the clock gate and MCLK
during HDMI TX/DP TX startup.

If MCLK enabling fails, disable the clock gate that was already
enabled before returning the error.

Fixes: 1de9a54acafb ("ASoC: mediatek: mt8195: support etdm in platform driver")
Signed-off-by: bui duc phuc <phucduc.bui at gmail.com>
---
 sound/soc/mediatek/mt8195/mt8195-dai-etdm.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/sound/soc/mediatek/mt8195/mt8195-dai-etdm.c b/sound/soc/mediatek/mt8195/mt8195-dai-etdm.c
index 1270fcac6b3f..11317cdd14ab 100644
--- a/sound/soc/mediatek/mt8195/mt8195-dai-etdm.c
+++ b/sound/soc/mediatek/mt8195/mt8195-dai-etdm.c
@@ -2321,13 +2321,25 @@ static int mtk_dai_hdmitx_dptx_startup(struct snd_pcm_substream *substream,
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	struct mt8195_afe_private *afe_priv = afe->platform_priv;
 	int cg_id = mtk_dai_etdm_get_cg_id_by_dai_id(dai->id);
+	int ret;
 
-	if (cg_id >= 0)
-		mt8195_afe_enable_clk(afe, afe_priv->clk[cg_id]);
+	if (cg_id >= 0) {
+		ret = mt8195_afe_enable_clk(afe, afe_priv->clk[cg_id]);
+		if (ret)
+			return ret;
+	}
 
-	mtk_dai_etdm_enable_mclk(afe, dai->id);
+	ret = mtk_dai_etdm_enable_mclk(afe, dai->id);
+	if (ret)
+		goto err_disable_cg_clk;
 
 	return 0;
+
+err_disable_cg_clk:
+	if (cg_id >= 0)
+		mt8195_afe_disable_clk(afe, afe_priv->clk[cg_id]);
+
+	return ret;
 }
 
 static void mtk_dai_hdmitx_dptx_shutdown(struct snd_pcm_substream *substream,
-- 
2.43.0