ALSA: snd-usb-6fire: use vmalloc buffers

For USB devices it's not necessary to allocate physically contiguous
buffers.

Signed-off-by: Antonio Ospite <ao2@amarulasolutions.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 7 deletions

diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c
index 40dd50a80f55..c5b9cac37dc4 100644
--- a/sound/usb/6fire/pcm.c
+++ b/sound/usb/6fire/pcm.c
@@ -450,13 +450,13 @@ static int usb6fire_pcm_close(struct snd_pcm_substream *alsa_sub)
 static int usb6fire_pcm_hw_params(struct snd_pcm_substream *alsa_sub,
                 struct snd_pcm_hw_params *hw_params)
 {
-        return snd_pcm_lib_malloc_pages(alsa_sub,
-                        params_buffer_bytes(hw_params));
+        return snd_pcm_lib_alloc_vmalloc_buffer(alsa_sub,
+                                                params_buffer_bytes(hw_params));
 }
 
 static int usb6fire_pcm_hw_free(struct snd_pcm_substream *alsa_sub)
 {
-        return snd_pcm_lib_free_pages(alsa_sub);
+        return snd_pcm_lib_free_vmalloc_buffer(alsa_sub);
 }
 
 static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub)
@@ -560,6 +560,8 @@ static struct snd_pcm_ops pcm_ops = {
         .prepare = usb6fire_pcm_prepare,
         .trigger = usb6fire_pcm_trigger,
         .pointer = usb6fire_pcm_pointer,
+        .page = snd_pcm_lib_get_vmalloc_page,
+        .mmap = snd_pcm_lib_mmap_vmalloc,
 };
 
 static void usb6fire_pcm_init_urb(struct pcm_urb *urb,
@@ -622,10 +624,6 @@ int usb6fire_pcm_init(struct sfire_chip *chip)
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_ops);
         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_ops);
 
-        ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
-                        SNDRV_DMA_TYPE_CONTINUOUS,
-                        snd_dma_continuous_data(GFP_KERNEL),
-                        MAX_BUFSIZE, MAX_BUFSIZE);
         if (ret) {
                 kfree(rt);
                 snd_printk(KERN_ERR PREFIX