ASoC: Use snd_soc_substream_to_rtd() for accessing

Merge series from Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>:

Do not open-code snd_soc_substream_to_rtd() when accessing
snd_pcm_substream->private_data.  This makes code more consistent with
rest of ASoC and allows in the future to move the field to any other
place or add additional checks in snd_soc_substream_to_rtd().

sound/arm/pxa2xx-pcm-lib.c

@@ -33,7 +33,7 @@ int pxa2xx_pcm_hw_params(struct snd_pcm_substream *substream,
 			 struct snd_pcm_hw_params *params)
 {
 	struct dma_chan *chan = snd_dmaengine_pcm_get_chan(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 *dma_params;
 	struct dma_slave_config config;
 	int ret;
@@ -79,7 +79,7 @@ EXPORT_SYMBOL(pxa2xx_pcm_prepare);
 
 int pxa2xx_pcm_open(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_pcm_runtime *runtime = substream->runtime;
 	struct snd_dmaengine_dai_dma_data *dma_params;
 	int ret;

sound/soc/amd/acp/acp-mach-common.c

@@ -217,7 +217,7 @@ static void acp_card_shutdown(struct snd_pcm_substream *substream)
 static int acp_card_rt5682_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_card *card = rtd->card;
 	struct acp_card_drvdata *drvdata = card->drvdata;
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);

sound/soc/amd/acp3x-rt5682-max9836.c

@@ -143,7 +143,7 @@ static int rt5682_clk_enable(struct snd_pcm_substream *substream)
 static int acp3x_1015_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;
 	int srate, i, ret;
 

sound/soc/amd/ps/ps-sdw-dma.c

@@ -218,7 +218,7 @@ static int acp63_sdw_dma_open(struct snd_soc_component *component,
 	struct acp_sdw_dma_stream *stream;
 	struct snd_soc_dai *cpu_dai;
 	struct amd_sdw_manager *amd_manager;
-	struct snd_soc_pcm_runtime *prtd = substream->private_data;
+	struct snd_soc_pcm_runtime *prtd = snd_soc_substream_to_rtd(substream);
 	int ret;
 
 	runtime = substream->runtime;

sound/soc/fsl/fsl-asoc-card.c

@@ -242,7 +242,7 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
 
 static int fsl_asoc_card_hw_free(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 fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card);
 	struct codec_priv *codec_priv = &priv->codec_priv;
 	struct device *dev = rtd->card->dev;

sound/soc/fsl/imx-card.c

@@ -252,7 +252,7 @@ static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream,
 					   struct snd_pcm_hw_params *params,
 					   int slots, int slot_width)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct imx_card_data *data = snd_soc_card_get_drvdata(rtd->card);
 	const struct imx_card_plat_data *plat_data = data->plat_data;
 	struct dai_link_data *link_data = &data->link_data[rtd->num];
@@ -289,7 +289,7 @@ static unsigned long akcodec_get_mclk_rate(struct snd_pcm_substream *substream,
 static int imx_aif_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_card *card = rtd->card;
 	struct imx_card_data *data = snd_soc_card_get_drvdata(card);
@@ -405,7 +405,7 @@ static int ak5558_hw_rule_rate(struct snd_pcm_hw_params *p, struct snd_pcm_hw_ru
 static int imx_aif_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_card *card = rtd->card;
 	struct imx_card_data *data = snd_soc_card_get_drvdata(card);
 	struct dai_link_data *link_data = &data->link_data[rtd->num];

sound/soc/fsl/imx-hdmi.c

@@ -32,7 +32,7 @@ struct imx_hdmi_data {
 static int imx_hdmi_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 imx_hdmi_data *data = snd_soc_card_get_drvdata(rtd->card);
 	bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);

sound/soc/fsl/imx-pcm-rpmsg.c

@@ -316,7 +316,7 @@ static int imx_rpmsg_pcm_prepare(struct snd_soc_component *component,
 				 struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct fsl_rpmsg *rpmsg = dev_get_drvdata(cpu_dai->dev);
 
@@ -461,7 +461,7 @@ static int imx_rpmsg_pcm_trigger(struct snd_soc_component *component,
 				 struct snd_pcm_substream *substream, int cmd)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct fsl_rpmsg *rpmsg = dev_get_drvdata(cpu_dai->dev);
 	int ret = 0;
@@ -515,7 +515,7 @@ static int imx_rpmsg_pcm_ack(struct snd_soc_component *component,
 			     struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct fsl_rpmsg *rpmsg = dev_get_drvdata(cpu_dai->dev);
 	struct rpmsg_info *info = dev_get_drvdata(component->dev);

sound/soc/img/img-i2s-in.c

@@ -395,7 +395,7 @@ static int img_i2s_in_dma_prepare_slave_config(struct snd_pcm_substream *st,
 	struct snd_pcm_hw_params *params, struct dma_slave_config *sc)
 {
 	unsigned int i2s_channels = params_channels(params) / 2;
-	struct snd_soc_pcm_runtime *rtd = st->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(st);
 	struct snd_dmaengine_dai_dma_data *dma_data;
 	int ret;
 

sound/soc/img/img-i2s-out.c

@@ -401,7 +401,7 @@ static int img_i2s_out_dma_prepare_slave_config(struct snd_pcm_substream *st,
 	struct snd_pcm_hw_params *params, struct dma_slave_config *sc)
 {
 	unsigned int i2s_channels = params_channels(params) / 2;
-	struct snd_soc_pcm_runtime *rtd = st->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(st);
 	struct snd_dmaengine_dai_dma_data *dma_data;
 	int ret;
 

sound/soc/kirkwood/kirkwood-dma.c

@@ -19,7 +19,7 @@
 
 static struct kirkwood_dma_data *kirkwood_priv(struct snd_pcm_substream *subs)
 {
-	struct snd_soc_pcm_runtime *soc_runtime = subs->private_data;
+	struct snd_soc_pcm_runtime *soc_runtime = snd_soc_substream_to_rtd(subs);
 	return snd_soc_dai_get_drvdata(snd_soc_rtd_to_cpu(soc_runtime, 0));
 }
 

sound/soc/loongson/loongson_card.c

@@ -23,7 +23,7 @@ struct loongson_card_data {
 static int loongson_card_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 	struct loongson_card_data *ls_card = snd_soc_card_get_drvdata(rtd->card);

sound/soc/loongson/loongson_dma.c

@@ -226,7 +226,7 @@ static int loongson_pcm_open(struct snd_soc_component *component,
 			     struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_card *card = substream->pcm->card;
 	struct loongson_runtime_data *prtd;
 	struct loongson_dma_data *dma_data;

sound/soc/mediatek/mt7986/mt7986-afe-pcm.c

@@ -106,7 +106,7 @@ static const struct snd_pcm_hardware mt7986_afe_hardware = {
 static int mt7986_memif_fs(struct snd_pcm_substream *substream,
 			   unsigned int rate)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
 
@@ -116,7 +116,7 @@ static int mt7986_memif_fs(struct snd_pcm_substream *substream,
 static int mt7986_irq_fs(struct snd_pcm_substream *substream,
 			 unsigned int rate)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
 

sound/soc/mediatek/mt8186/mt8186-afe-pcm.c

@@ -40,7 +40,7 @@ static const struct snd_pcm_hardware mt8186_afe_hardware = {
 static int mt8186_fe_startup(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
@@ -82,7 +82,7 @@ static int mt8186_fe_startup(struct snd_pcm_substream *substream,
 static void mt8186_fe_shutdown(struct snd_pcm_substream *substream,
 			       struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	struct mt8186_afe_private *afe_priv = afe->platform_priv;
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
@@ -104,7 +104,7 @@ static int mt8186_fe_hw_params(struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params,
 			       struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
 	unsigned int channels = params_channels(params);
@@ -153,7 +153,7 @@ static int mt8186_fe_hw_free(struct snd_pcm_substream *substream,
 static int mt8186_fe_trigger(struct snd_pcm_substream *substream, int cmd,
 			     struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime * const runtime = substream->runtime;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	struct mt8186_afe_private *afe_priv = afe->platform_priv;
@@ -252,7 +252,7 @@ static int mt8186_fe_trigger(struct snd_pcm_substream *substream, int cmd,
 static int mt8186_memif_fs(struct snd_pcm_substream *substream,
 			   unsigned int rate)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_component *component =
 		snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
@@ -269,7 +269,7 @@ static int mt8186_get_dai_fs(struct mtk_base_afe *afe,
 
 static int mt8186_irq_fs(struct snd_pcm_substream *substream, unsigned int rate)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_component *component =
 		snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
@@ -290,7 +290,7 @@ static int mt8186_get_memif_pbuf_size(struct snd_pcm_substream *substream)
 static int mt8186_fe_prepare(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime * const runtime = substream->runtime;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;

sound/soc/mediatek/mt8186/mt8186-mt6366.c

@@ -297,7 +297,7 @@ static const struct snd_soc_ops mt8186_da7219_i2s_ops = {
 static int mt8186_rt5682s_i2s_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_card *card = rtd->card;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);

sound/soc/mediatek/mt8188/mt8188-afe-pcm.c

@@ -91,7 +91,7 @@ int mt8188_afe_fs_timing(unsigned int rate)
 static int mt8188_memif_fs(struct snd_pcm_substream *substream,
 			   unsigned int rate)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_component *component = NULL;
 	struct mtk_base_afe *afe = NULL;
 	struct mt8188_afe_private *afe_priv = NULL;
@@ -300,7 +300,7 @@ static int mt8188_afe_enable_cm(struct mtk_base_afe *afe,
 static int mt8188_afe_fe_startup(struct snd_pcm_substream *substream,
 				 struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
@@ -334,7 +334,7 @@ static int mt8188_afe_fe_hw_params(struct snd_pcm_substream *substream,
 				   struct snd_pcm_hw_params *params,
 				   struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
 	struct mtk_base_afe_memif *memif = &afe->memif[id];
@@ -358,7 +358,7 @@ static int mt8188_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
 {
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	const struct mt8188_afe_channel_merge *cm = mt8188_afe_found_cm(dai);
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime * const runtime = substream->runtime;
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
 	struct mtk_base_afe_memif *memif = &afe->memif[id];

sound/soc/mediatek/mt8188/mt8188-mt6359.c

@@ -557,7 +557,7 @@ enum {
 static int mt8188_dptx_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);
 	unsigned int rate = params_rate(params);
 	unsigned int mclk_fs_ratio = 256;
 	unsigned int mclk_fs = rate * mclk_fs_ratio;
@@ -658,7 +658,7 @@ static int mt8188_dumb_amp_init(struct snd_soc_pcm_runtime *rtd)
 static int mt8188_max98390_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);
 	unsigned int bit_width = params_width(params);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai;
@@ -821,7 +821,7 @@ static const struct snd_soc_ops mt8188_nau8825_ops = {
 static int mt8188_rt5682s_i2s_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_card *card = rtd->card;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);

sound/soc/mediatek/mt8195/mt8195-afe-pcm.c

@@ -84,7 +84,7 @@ int mt8195_afe_fs_timing(unsigned int rate)
 static int mt8195_memif_fs(struct snd_pcm_substream *substream,
 			   unsigned int rate)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_component *component =
 			snd_soc_rtdcom_lookup(rtd, AFE_PCM_NAME);
 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(component);
@@ -281,7 +281,7 @@ mt8195_afe_paired_memif_clk_prepare(struct snd_pcm_substream *substream,
 				    struct snd_soc_dai *dai,
 				    int enable)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	struct mt8195_afe_private *afe_priv = afe->platform_priv;
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
@@ -310,7 +310,7 @@ mt8195_afe_paired_memif_clk_enable(struct snd_pcm_substream *substream,
 				   struct snd_soc_dai *dai,
 				   int enable)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	struct mt8195_afe_private *afe_priv = afe->platform_priv;
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
@@ -342,7 +342,7 @@ mt8195_afe_paired_memif_clk_enable(struct snd_pcm_substream *substream,
 static int mt8195_afe_fe_startup(struct snd_pcm_substream *substream,
 				 struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
@@ -380,7 +380,7 @@ static int mt8195_afe_fe_hw_params(struct snd_pcm_substream *substream,
 				   struct snd_pcm_hw_params *params,
 				   struct snd_soc_dai *dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
 	int id = snd_soc_rtd_to_cpu(rtd, 0)->id;
 	struct mtk_base_afe_memif *memif = &afe->memif[id];

sound/soc/mediatek/mt8195/mt8195-mt6359.c

@@ -338,7 +338,7 @@ static const struct snd_soc_ops mt8195_hdmitx_dptx_playback_ops = {
 static int mt8195_dptx_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 
 	return snd_soc_dai_set_sysclk(cpu_dai, 0, params_rate(params) * 256,
@@ -394,7 +394,7 @@ static int mt8195_dptx_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 static int mt8195_rt5682_etdm_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_card *card = rtd->card;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);

sound/soc/meson/aiu-fifo.c

@@ -25,7 +25,7 @@
 
 static struct snd_soc_dai *aiu_fifo_dai(struct snd_pcm_substream *ss)
 {
-	struct snd_soc_pcm_runtime *rtd = ss->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(ss);
 
 	return snd_soc_rtd_to_cpu(rtd, 0);
 }

sound/soc/meson/axg-fifo.c

@@ -46,7 +46,7 @@ static struct snd_pcm_hardware axg_fifo_hw = {
 
 static struct snd_soc_dai *axg_fifo_dai(struct snd_pcm_substream *ss)
 {
-	struct snd_soc_pcm_runtime *rtd = ss->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(ss);
 
 	return snd_soc_rtd_to_cpu(rtd, 0);
 }

sound/soc/qcom/apq8016_sbc.c

@@ -192,7 +192,7 @@ static int msm8916_qdsp6_dai_init(struct snd_soc_pcm_runtime *rtd)
 
 static int msm8916_qdsp6_startup(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_soc_card *card = rtd->card;
 	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -213,7 +213,7 @@ static int msm8916_qdsp6_startup(struct snd_pcm_substream *substream)
 
 static void msm8916_qdsp6_shutdown(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_soc_card *card = rtd->card;
 	struct apq8016_sbc_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);

sound/soc/qcom/qdsp6/q6apm-dai.c

@@ -327,7 +327,7 @@ static int q6apm_dai_open(struct snd_soc_component *component,
 			  struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
+	struct snd_soc_pcm_runtime *soc_prtd = snd_soc_substream_to_rtd(substream);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(soc_prtd, 0);
 	struct device *dev = component->dev;
 	struct q6apm_dai_data *pdata;

sound/soc/qcom/sc7180.c

@@ -200,7 +200,7 @@ static int sc7180_startup_realtek_codec(struct snd_soc_pcm_runtime *rtd)
 
 static int sc7180_snd_startup(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_soc_card *card = rtd->card;
 	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -234,7 +234,7 @@ static int sc7180_snd_startup(struct snd_pcm_substream *substream)
 
 static int sc7180_qdsp_snd_startup(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_soc_card *card = rtd->card;
 	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -307,7 +307,7 @@ static int dmic_set(struct snd_kcontrol *kcontrol,
 
 static void sc7180_snd_shutdown(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_soc_card *card = rtd->card;
 	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -334,7 +334,7 @@ static void sc7180_snd_shutdown(struct snd_pcm_substream *substream)
 
 static void sc7180_qdsp_snd_shutdown(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_soc_card *card = rtd->card;
 	struct sc7180_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -389,7 +389,7 @@ static int sc7180_adau7002_init(struct snd_soc_pcm_runtime *rtd)
 
 static int sc7180_adau7002_snd_startup(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 	struct snd_pcm_runtime *runtime = substream->runtime;

sound/soc/qcom/sc7280.c

@@ -205,7 +205,7 @@ static int sc7280_snd_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	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;
 	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sc7280_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
@@ -237,7 +237,7 @@ static int sc7280_snd_hw_params(struct snd_pcm_substream *substream,
 
 static int sc7280_snd_swr_prepare(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);
 	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -268,7 +268,7 @@ static int sc7280_snd_swr_prepare(struct snd_pcm_substream *substream)
 
 static int sc7280_snd_prepare(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);
 	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 
 	switch (cpu_dai->id) {
@@ -287,7 +287,7 @@ static int sc7280_snd_prepare(struct snd_pcm_substream *substream)
 
 static int sc7280_snd_hw_free(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 sc7280_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	const struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -312,7 +312,7 @@ static int sc7280_snd_hw_free(struct snd_pcm_substream *substream)
 
 static void sc7280_snd_shutdown(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_soc_card *card = rtd->card;
 	struct sc7280_snd_data *data = snd_soc_card_get_drvdata(card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
@@ -339,7 +339,7 @@ static int sc7280_snd_startup(struct snd_pcm_substream *substream)
 {
 	unsigned int fmt = SND_SOC_DAIFMT_CBS_CFS;
 	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_CBS_CFS;
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 	int ret = 0;

sound/soc/qcom/sc8280xp.c

@@ -50,7 +50,7 @@ static int sc8280xp_snd_init(struct snd_soc_pcm_runtime *rtd)
 
 static void sc8280xp_snd_shutdown(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = pdata->sruntime[cpu_dai->id];
@@ -89,7 +89,7 @@ static int sc8280xp_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 static int sc8280xp_snd_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sc8280xp_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 
@@ -98,7 +98,7 @@ static int sc8280xp_snd_hw_params(struct snd_pcm_substream *substream,
 
 static int sc8280xp_snd_prepare(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -109,7 +109,7 @@ static int sc8280xp_snd_prepare(struct snd_pcm_substream *substream)
 
 static int sc8280xp_snd_hw_free(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 sc8280xp_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];

sound/soc/qcom/sdw.c

@@ -21,7 +21,7 @@
  */
 int qcom_snd_sdw_startup(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime;
 	struct snd_soc_dai *codec_dai;
@@ -54,7 +54,7 @@ int qcom_snd_sdw_prepare(struct snd_pcm_substream *substream,
 			 struct sdw_stream_runtime *sruntime,
 			 bool *stream_prepared)
 {
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	int ret;
 
@@ -105,7 +105,7 @@ int qcom_snd_sdw_hw_params(struct snd_pcm_substream *substream,
 			   struct snd_pcm_hw_params *params,
 			   struct sdw_stream_runtime **psruntime)
 {
-	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;
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime;
@@ -135,7 +135,7 @@ EXPORT_SYMBOL_GPL(qcom_snd_sdw_hw_params);
 int qcom_snd_sdw_hw_free(struct snd_pcm_substream *substream,
 			 struct sdw_stream_runtime *sruntime, bool *stream_prepared)
 {
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 
 	switch (cpu_dai->id) {

sound/soc/qcom/sm8250.c

@@ -50,7 +50,7 @@ static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 {
 	unsigned int fmt = SND_SOC_DAIFMT_BP_FP;
 	unsigned int codec_dai_fmt = SND_SOC_DAIFMT_BC_FC;
-	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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
 
@@ -72,7 +72,7 @@ static int sm8250_snd_startup(struct snd_pcm_substream *substream)
 
 static void sm2450_snd_shutdown(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -84,7 +84,7 @@ static void sm2450_snd_shutdown(struct snd_pcm_substream *substream)
 static int sm8250_snd_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sm8250_snd_data *pdata = snd_soc_card_get_drvdata(rtd->card);
 
@@ -93,7 +93,7 @@ static int sm8250_snd_hw_params(struct snd_pcm_substream *substream,
 
 static int sm8250_snd_prepare(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -104,7 +104,7 @@ static int sm8250_snd_prepare(struct snd_pcm_substream *substream)
 
 static int sm8250_snd_hw_free(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 sm8250_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];

sound/soc/qcom/x1e80100.c

@@ -31,7 +31,7 @@ static int x1e80100_snd_init(struct snd_soc_pcm_runtime *rtd)
 
 static void x1e80100_snd_shutdown(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -67,7 +67,7 @@ static int x1e80100_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd,
 static int x1e80100_snd_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 *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 
@@ -76,7 +76,7 @@ static int x1e80100_snd_hw_params(struct snd_pcm_substream *substream,
 
 static int x1e80100_snd_prepare(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_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];
@@ -87,7 +87,7 @@ static int x1e80100_snd_prepare(struct snd_pcm_substream *substream)
 
 static int x1e80100_snd_hw_free(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 x1e80100_snd_data *data = snd_soc_card_get_drvdata(rtd->card);
 	struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
 	struct sdw_stream_runtime *sruntime = data->sruntime[cpu_dai->id];

sound/soc/samsung/midas_wm1811.c

@@ -127,7 +127,7 @@ static int midas_stop_fll1(struct snd_soc_pcm_runtime *rtd)
 static int midas_aif1_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);
 	unsigned int pll_out;
 
 	/* AIF1CLK should be at least 3MHz for "optimal performance" */

sound/soc/sunxi/sun50i-dmic.c

@@ -86,7 +86,7 @@ static const struct dmic_rate dmic_rate_s[] = {
 static int sun50i_dmic_startup(struct snd_pcm_substream *substream,
 			       struct snd_soc_dai *cpu_dai)
 {
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
 	struct sun50i_dmic_dev *host = snd_soc_dai_get_drvdata(snd_soc_rtd_to_cpu(rtd, 0));
 
 	/* only support capture */

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;

sound/soc/ti/omap-hdmi.c

@@ -40,7 +40,7 @@ struct hdmi_audio_data {
 static
 struct hdmi_audio_data *card_drvdata_substream(struct snd_pcm_substream *ss)
 {
-	struct snd_soc_pcm_runtime *rtd = ss->private_data;
+	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(ss);
 
 	return snd_soc_card_get_drvdata(rtd->card);
 }