[PATCH v1 5/5] ASoC: qcom: sc8280xp: Fix TDM hw_params error handling

[Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>]

Treat -ENOENT from TDM slot parsing as the optional "configuration not
present" case and continue to propagate real configuration errors.

Also ignore -ENOTSUPP from optional DAI format and codec sysclk
callbacks, apply codec_dai_fmt to codec DAIs on TDM links, and use a
signed bclk_freq variable so errors from snd_soc_tdm_params_to_bclk()
are handled correctly.

Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260804070307.117119-1-prasad.kumpatla@oss.qualcomm.com
Signed-off-by: Prasad Kumpatla <prasad.kumpatla@oss.qualcomm.com>
---
 sound/soc/qcom/sc8280xp.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/sound/soc/qcom/sc8280xp.c b/sound/soc/qcom/sc8280xp.c
index 597c0d887d2f..0120443da418 100644
--- a/sound/soc/qcom/sc8280xp.c
+++ b/sound/soc/qcom/sc8280xp.c
@@ -115,33 +115,42 @@ static int sc8280xp_tdm_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_dai *codec_dai;
 	struct qcom_snd_tdm_slot_cfg cpu_cfg;
 	struct qcom_snd_tdm_slot_cfg codec_cfg;
-	unsigned int bclk_freq;
+	int bclk_freq;
 	int ret;
 	int i;
 
 	ret = qcom_snd_get_dai_tdm_slots(rtd, &cpu_cfg, &codec_cfg);
 	if (ret)
-		return ret == -EINVAL ? 0 : ret;
+		return ret == -ENOENT ? 0 : ret;
 
 	if (!cpu_cfg.slots)
 		return 0;
 
 	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_BP_FP);
-	if (ret)
+	if (ret && ret != -ENOTSUPP)
 		return ret;
 
+	if (data->priv->codec_dai_fmt) {
+		for_each_rtd_codec_dais(rtd, i, codec_dai) {
+			ret = snd_soc_dai_set_fmt(codec_dai,
+						  data->priv->codec_dai_fmt);
+			if (ret && ret != -ENOTSUPP)
+				return ret;
+		}
+	}
+
 	ret = qcom_snd_apply_dai_tdm_slots_cfg(rtd, &cpu_cfg, &codec_cfg);
 	if (ret)
 		return ret;
 
 	bclk_freq = snd_soc_tdm_params_to_bclk(params, cpu_cfg.slot_width, cpu_cfg.slots, 1);
-	if (!bclk_freq)
+	if (bclk_freq <= 0)
 		return -EINVAL;
 
 	if (data->priv->mi2s_bclk_enable) {
 		ret = snd_soc_dai_set_sysclk(cpu_dai, LPAIF_MI2S_BCLK, bclk_freq,
 					     SND_SOC_CLOCK_IN);
-		if (ret) {
+		if (ret && ret != -ENOTSUPP) {
 			dev_err(rtd->dev, "%s: failed to set cpu sysclk: %d\n",
 				__func__, ret);
 			return ret;
@@ -152,7 +161,7 @@ static int sc8280xp_tdm_hw_params(struct snd_pcm_substream *substream,
 		for_each_rtd_codec_dais(rtd, i, codec_dai) {
 			ret = snd_soc_dai_set_sysclk(codec_dai, 0, bclk_freq,
 						     SND_SOC_CLOCK_IN);
-			if (ret) {
+			if (ret && ret != -ENOTSUPP) {
 				dev_err(rtd->dev, "%s: failed to set codec sysclk on %s: %d\n",
 					__func__, codec_dai->name, ret);
 				return ret;
-- 
2.34.1