ALSA: cs5535: Use managed buffer allocation

Clean up the driver with the new managed buffer allocation API.
The superfluous snd_pcm_lib_malloc_pages() and
snd_pcm_lib_free_pages() calls are dropped.

Link: https://lore.kernel.org/r/20191209094943.14984-33-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/cs5535audio/cs5535audio_pcm.c

@@ -236,10 +236,6 @@ static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream,
 	struct cs5535audio_dma *dma = substream->runtime->private_data;
 	int err;
 
-	err = snd_pcm_lib_malloc_pages(substream,
-					params_buffer_bytes(hw_params));
-	if (err < 0)
-		return err;
 	dma->buf_addr = substream->runtime->dma_addr;
 	dma->buf_bytes = params_buffer_bytes(hw_params);
 
@@ -267,7 +263,7 @@ static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream)
 		dma->pcm_open_flag = 0;
 	}
 	cs5535audio_clear_dma_packets(cs5535au, dma, substream);
-	return snd_pcm_lib_free_pages(substream);
+	return 0;
 }
 
 static int snd_cs5535audio_playback_prepare(struct snd_pcm_substream *substream)
@@ -431,9 +427,9 @@ int snd_cs5535audio_pcm(struct cs5535audio *cs5535au)
 	pcm->info_flags = 0;
 	strcpy(pcm->name, "CS5535 Audio");
 
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-					      &cs5535au->pci->dev,
-					      64*1024, 128*1024);
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+				       &cs5535au->pci->dev,
+				       64*1024, 128*1024);
 	cs5535au->pcm = pcm;
 
 	return 0;