[PATCH 1/5] ASoC: fsl_sai: Fix PM QoS cleanup on resume failure

[phucduc . bui]

From: bui duc phuc <phucduc.bui@xxxxxxxxx>

If regcache_sync() fails during runtime resume, the CPU latency
QoS request remains active even though the resume operation
failed.

Switch the regmap back to cache-only mode and remove the PM QoS
request before disabling the clocks, ensuring that the resources
enabled earlier in the resume path are properly cleaned up.

Fixes: 907e0cdebc1f ("ASoC: fsl_sai: Add pm qos cpu latency support")
Signed-off-by: bui duc phuc <phucduc.bui@xxxxxxxxx>
---
 sound/soc/fsl/fsl_sai.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index d232c8f53061..042885ba415e 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1981,7 +1981,7 @@ static int fsl_sai_runtime_resume(struct device *dev)
 
 	ret = regcache_sync(sai->regmap);
 	if (ret)
-		goto disable_rx_clk;
+		goto remove_qos;
 
 	if (sai->soc_data->mclk_with_tere && sai->mclk_direction_output)
 		regmap_update_bits(sai->regmap, FSL_SAI_TCSR(ofs),
@@ -1989,7 +1989,12 @@ static int fsl_sai_runtime_resume(struct device *dev)
 
 	return 0;
 
-disable_rx_clk:
+remove_qos:
+	regcache_cache_only(sai->regmap, true);
+
+	if (sai->soc_data->flags & PMQOS_CPU_LATENCY)
+		cpu_latency_qos_remove_request(&sai->pm_qos_req);
+
 	if (sai->mclk_streams & BIT(SNDRV_PCM_STREAM_CAPTURE))
 		clk_disable_unprepare(sai->mclk_clk[sai->mclk_id[0]]);
 disable_tx_clk:
-- 
2.43.0