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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>
This commit is contained in:
Antonio Ospite 2013-06-21 13:11:50 +02:00 committed by Takashi Iwai
parent fc76f86376
commit 4a9f911861
1 changed files with 5 additions and 7 deletions
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12
sound/usb/6fire/pcm.c
View File

@ -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