--- zzzz-none-000/linux-3.10.107/sound/soc/mxs/mxs-pcm.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/soc/mxs/mxs-pcm.c	2021-02-04 17:41:59.000000000 +0000
@@ -36,11 +36,6 @@
 				  SNDRV_PCM_INFO_RESUME |
 				  SNDRV_PCM_INFO_INTERLEAVED |
 				  SNDRV_PCM_INFO_HALF_DUPLEX,
-	.formats		= SNDRV_PCM_FMTBIT_S16_LE |
-				  SNDRV_PCM_FMTBIT_S20_3LE |
-				  SNDRV_PCM_FMTBIT_S24_LE,
-	.channels_min		= 2,
-	.channels_max		= 2,
 	.period_bytes_min	= 32,
 	.period_bytes_max	= 8192,
 	.periods_min		= 1,
@@ -49,41 +44,16 @@
 	.fifo_size		= 32,
 };
 
-static bool filter(struct dma_chan *chan, void *param)
-{
-	struct mxs_pcm_dma_params *dma_params = param;
-
-	if (!mxs_dma_is_apbx(chan))
-		return false;
-
-	if (chan->chan_id != dma_params->chan_num)
-		return false;
-
-	chan->private = &dma_params->dma_data;
-
-	return true;
-}
-
 static const struct snd_dmaengine_pcm_config mxs_dmaengine_pcm_config = {
 	.pcm_hardware = &snd_mxs_hardware,
-	.compat_filter_fn = filter,
 	.prealloc_buffer_size = 64 * 1024,
 };
 
 int mxs_pcm_platform_register(struct device *dev)
 {
-	return snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
-		SND_DMAENGINE_PCM_FLAG_NO_RESIDUE |
-		SND_DMAENGINE_PCM_FLAG_NO_DT |
-		SND_DMAENGINE_PCM_FLAG_COMPAT |
+	return devm_snd_dmaengine_pcm_register(dev, &mxs_dmaengine_pcm_config,
 		SND_DMAENGINE_PCM_FLAG_HALF_DUPLEX);
 }
 EXPORT_SYMBOL_GPL(mxs_pcm_platform_register);
 
-void mxs_pcm_platform_unregister(struct device *dev)
-{
-	snd_dmaengine_pcm_unregister(dev);
-}
-EXPORT_SYMBOL_GPL(mxs_pcm_platform_unregister);
-
 MODULE_LICENSE("GPL");