ASoC: tegra: Use snd_soc_substream_to_rtd() for accessing private_data

Do not open-code snd_soc_substream_to_rtd().
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240430-asoc-snd-substream-clean-v1-2-6f8a8902b479@linaro.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/tegra/tegra_asoc_machine.c

@@ -290,7 +290,7 @@ static unsigned int tegra_machine_mclk_rate_6mhz(unsigned int srate)
 static int tegra_machine_hw_params(struct snd_pcm_substream *substream,
 				   struct snd_pcm_hw_params *params)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 	struct snd_soc_card *card = rtd->card;
 	struct tegra_machine *machine = snd_soc_card_get_drvdata(card);

sound/soc/tegra/tegra_pcm.c

@@ -76,7 +76,7 @@ EXPORT_SYMBOL_GPL(tegra_pcm_platform_unregister);
 int tegra_pcm_open(struct snd_soc_component *component,
 		   struct snd_pcm_substream *substream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_dmaengine_dai_dma_data *dmap;
 	struct dma_chan *chan;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -127,7 +127,7 @@ EXPORT_SYMBOL_GPL(tegra_pcm_open);
 int tegra_pcm_close(struct snd_soc_component *component,
 		    struct snd_pcm_substream *substream)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 
 	if (rtd->dai_link->no_pcm)
 		return 0;
@@ -142,7 +142,7 @@ int tegra_pcm_hw_params(struct snd_soc_component *component,
 			struct snd_pcm_substream *substream,
 			struct snd_pcm_hw_params *params)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_dmaengine_dai_dma_data *dmap;
 	struct dma_slave_config slave_config;
 	struct dma_chan *chan;