[alsa-devel] [PATCH 5.6 31/71] ALSA: cs4281: Use managed buffer allocation

[Takashi Iwai]

Clean up the driver with the new managed buffer allocation API.
The hw_params and hw_free callbacks became superfluous and got
dropped.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
 sound/pci/cs4281.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c
index 058c1414b777..ea665d42107e 100644
--- a/sound/pci/cs4281.c
+++ b/sound/pci/cs4281.c
@@ -780,17 +780,6 @@ static void snd_cs4281_mode(struct cs4281 *chip, struct cs4281_dma *dma,
 	snd_cs4281_pokeBA0(chip, dma->regFSIC, 0);
 }
 
-static int snd_cs4281_hw_params(struct snd_pcm_substream *substream,
-				struct snd_pcm_hw_params *hw_params)
-{
-	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
-}
-
-static int snd_cs4281_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
 static int snd_cs4281_playback_prepare(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
@@ -939,8 +928,6 @@ static const struct snd_pcm_ops snd_cs4281_playback_ops = {
 	.open =		snd_cs4281_playback_open,
 	.close =	snd_cs4281_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
-	.hw_params =	snd_cs4281_hw_params,
-	.hw_free =	snd_cs4281_hw_free,
 	.prepare =	snd_cs4281_playback_prepare,
 	.trigger =	snd_cs4281_trigger,
 	.pointer =	snd_cs4281_pointer,
@@ -950,8 +937,6 @@ static const struct snd_pcm_ops snd_cs4281_capture_ops = {
 	.open =		snd_cs4281_capture_open,
 	.close =	snd_cs4281_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,
-	.hw_params =	snd_cs4281_hw_params,
-	.hw_free =	snd_cs4281_hw_free,
 	.prepare =	snd_cs4281_capture_prepare,
 	.trigger =	snd_cs4281_trigger,
 	.pointer =	snd_cs4281_pointer,
@@ -974,9 +959,8 @@ static int snd_cs4281_pcm(struct cs4281 *chip, int device)
 	strcpy(pcm->name, "CS4281");
 	chip->pcm = pcm;
 
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-					      &chip->pci->dev,
-					      64*1024, 512*1024);
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, &chip->pci->dev,
+				       64*1024, 512*1024);
 
 	return 0;
 }
-- 
2.16.4