diff --git a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
index ae29df0..8d8d54b 100644
--- a/sound/pci/ali5451/ali5451.c
+++ b/sound/pci/ali5451/ali5451.c
@@ -1138,13 +1138,7 @@ static int snd_ali_playback_hw_params(struct snd_pcm_substream *substream,
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_ali_voice *pvoice = runtime->private_data;
 	struct snd_ali_voice *evoice = pvoice->extra;
-	int err;
 
-	err = snd_pcm_lib_malloc_pages(substream,
-				       params_buffer_bytes(hw_params));
-	if (err < 0)
-		return err;
-	
 	/* voice management */
 
 	if (params_buffer_size(hw_params) / 2 !=
@@ -1175,7 +1169,6 @@ static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
 	struct snd_ali_voice *pvoice = runtime->private_data;
 	struct snd_ali_voice *evoice = pvoice ? pvoice->extra : NULL;
 
-	snd_pcm_lib_free_pages(substream);
 	if (evoice) {
 		snd_ali_free_voice(codec, evoice);
 		pvoice->extra = NULL;
@@ -1183,18 +1176,6 @@ static int snd_ali_playback_hw_free(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static int snd_ali_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_ali_hw_free(struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
-}
-
 static int snd_ali_playback_prepare(struct snd_pcm_substream *substream)
 {
 	struct snd_ali *codec = snd_pcm_substream_chip(substream);
@@ -1538,8 +1519,6 @@ static const struct snd_pcm_ops snd_ali_capture_ops = {
 	.open =		snd_ali_capture_open,
 	.close =	snd_ali_close,
 	.ioctl =	snd_pcm_lib_ioctl,
-	.hw_params =	snd_ali_hw_params,
-	.hw_free =	snd_ali_hw_free,
 	.prepare =	snd_ali_prepare,
 	.trigger =	snd_ali_trigger,
 	.pointer =	snd_ali_pointer,
@@ -1557,7 +1536,7 @@ static int snd_ali_modem_hw_params(struct snd_pcm_substream *substream,
 	snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_RATE,
 		       params_rate(hw_params));
 	snd_ac97_write(chip->ac97[modem_num], AC97_LINE1_LEVEL, 0);
-	return snd_ali_hw_params(substream, hw_params);
+	return 0;
 }
 
 static struct snd_pcm_hardware snd_ali_modem =
@@ -1614,7 +1593,6 @@ static const struct snd_pcm_ops snd_ali_modem_playback_ops = {
 	.close =	snd_ali_close,
 	.ioctl =	snd_pcm_lib_ioctl,
 	.hw_params =	snd_ali_modem_hw_params,
-	.hw_free =	snd_ali_hw_free,
 	.prepare =	snd_ali_prepare,
 	.trigger =	snd_ali_trigger,
 	.pointer =	snd_ali_pointer,
@@ -1625,7 +1603,6 @@ static const struct snd_pcm_ops snd_ali_modem_capture_ops = {
 	.close =	snd_ali_close,
 	.ioctl =	snd_pcm_lib_ioctl,
 	.hw_params =	snd_ali_modem_hw_params,
-	.hw_free =	snd_ali_hw_free,
 	.prepare =	snd_ali_prepare,
 	.trigger =	snd_ali_trigger,
 	.pointer =	snd_ali_pointer,
@@ -1671,9 +1648,8 @@ static int snd_ali_pcm(struct snd_ali *codec, int device,
 		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 				desc->capture_ops);
 
-	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-					      &codec->pci->dev,
-					      64*1024, 128*1024);
+	snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+				       &codec->pci->dev, 64*1024, 128*1024);
 
 	pcm->info_flags = 0;
 	pcm->dev_class = desc->class;