ALSA: ctxfi: 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/20191209094943.14984-34-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ctxfi/ctpcm.c

@@ -178,15 +178,10 @@ static int ct_pcm_hw_params(struct snd_pcm_substream *substream,
 {
 	struct ct_atc *atc = snd_pcm_substream_chip(substream);
 	struct ct_atc_pcm *apcm = substream->runtime->private_data;
-	int err;
 
-	err = snd_pcm_lib_malloc_pages(substream,
-					params_buffer_bytes(hw_params));
-	if (err < 0)
-		return err;
 	/* clear previous resources */
 	atc->pcm_release_resources(atc, apcm);
-	return err;
+	return 0;
 }
 
 static int ct_pcm_hw_free(struct snd_pcm_substream *substream)
@@ -196,8 +191,7 @@ static int ct_pcm_hw_free(struct snd_pcm_substream *substream)
 
 	/* clear previous resources */
 	atc->pcm_release_resources(atc, apcm);
-	/* Free snd-allocated pages */
-	return snd_pcm_lib_free_pages(substream);
+	return 0;
 }
 
 
@@ -449,9 +443,8 @@ int ct_alsa_pcm_create(struct ct_atc *atc,
 		snd_pcm_set_ops(pcm,
 				SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops);
 
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
-					      &atc->pci->dev,
-					      128*1024, 128*1024);
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
+				       &atc->pci->dev, 128*1024, 128*1024);
 
 	chs = 2;
 	switch (device) {