[PATCH 06/14] ASoC: mediatek: mt8195: Fix FE startup error handling

[phucduc.bui@gmail.com]

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

Check and propagate errors from paired memif clock preparation and
PCM hardware constraints during FE startup.

Unprepare the paired memif clocks and shut down the FE when a later
startup step fails to avoid leaving resources enabled on error.

Fixes: 6746cc858259 ("ASoC: mediatek: mt8195: add platform driver")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 40 +++++++++++++++-------
 1 file changed, 27 insertions(+), 13 deletions(-)

diff --git a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c
index 1d3e01e2c3e7..5e76625915a5 100644
--- a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c
+++ b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c
@@ -364,24 +364,38 @@ static int mt8195_afe_fe_startup(struct snd_pcm_substream *substream,
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
 	int ret = 0;
 
-	mt8195_afe_paired_memif_clk_prepare(substream, dai, 1);
+	ret = mt8195_afe_paired_memif_clk_prepare(substream, dai, 1);
+	if (ret)
+		return ret;
 
 	ret = mtk_afe_fe_startup(substream, dai);
+	if (ret)
+		goto err_clk_unprepare;
 
-	snd_pcm_hw_constraint_step(runtime, 0,
-				   SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
-				   MT8195_MEMIF_BUFFER_BYTES_ALIGN);
+	ret = snd_pcm_hw_constraint_step(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
+					 MT8195_MEMIF_BUFFER_BYTES_ALIGN);
+	if (ret)
+		goto err_fe_shutdow;
 
-	if (id != MT8195_AFE_MEMIF_DL7)
-		goto out;
+	if (id == MT8195_AFE_MEMIF_DL7) {
+		ret = snd_pcm_hw_constraint_minmax(runtime,
+						   SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
+						   1,
+						   MT8195_MEMIF_DL7_MAX_PERIOD_SIZE);
+		if (ret < 0) {
+			dev_dbg(afe->dev, "hw_constraint_minmax failed\n");
+			goto err_fe_shutdow;
+		}
+	}
+
+	return 0;
+
+err_fe_shutdow:
+	mtk_afe_fe_shutdown(substream, dai);
+err_clk_unprepare:
+	mt8195_afe_paired_memif_clk_prepare(substream, dai, 0);
 
-	ret = snd_pcm_hw_constraint_minmax(runtime,
-					   SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
-					   1,
-					   MT8195_MEMIF_DL7_MAX_PERIOD_SIZE);
-	if (ret < 0)
-		dev_dbg(afe->dev, "hw_constraint_minmax failed\n");
-out:
 	return ret;
 }
 
-- 
2.43.0