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ALSA: snd-usb-caiaq: use vmalloc buffers

Browse source 
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 13:11:49 +02:00 committed by Takashi Iwai
parent 3dd446a7e5
commit fc76f86376
1 changed files with 6 additions and 8 deletions
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14
sound/usb/caiaq/audio.c
View file

@ -183,14 +183,15 @@ static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
static int snd_usb_caiaq_pcm_hw_params(struct snd_pcm_substream *sub,
struct snd_pcm_hw_params *hw_params)
{
return snd_pcm_lib_malloc_pages(sub, params_buffer_bytes(hw_params));
return snd_pcm_lib_alloc_vmalloc_buffer(sub,
params_buffer_bytes(hw_params));
}
static int snd_usb_caiaq_pcm_hw_free(struct snd_pcm_substream *sub)
{
struct snd_usb_caiaqdev *cdev = snd_pcm_substream_chip(sub);
deactivate_substream(cdev, sub);
return snd_pcm_lib_free_pages(sub);
return snd_pcm_lib_free_vmalloc_buffer(sub);
}
/* this should probably go upstream */
@ -345,7 +346,9 @@ static struct snd_pcm_ops snd_usb_caiaq_ops = {
.hw_free = snd_usb_caiaq_pcm_hw_free,
.prepare = snd_usb_caiaq_pcm_prepare,
.trigger = snd_usb_caiaq_pcm_trigger,
.pointer = snd_usb_caiaq_pcm_pointer
.pointer = snd_usb_caiaq_pcm_pointer,
.page = snd_pcm_lib_get_vmalloc_page,
.mmap = snd_pcm_lib_mmap_vmalloc,
};
static void check_for_elapsed_periods(struct snd_usb_caiaqdev *cdev,
@ -852,11 +855,6 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev)
snd_pcm_set_ops(cdev->pcm, SNDRV_PCM_STREAM_CAPTURE,
&snd_usb_caiaq_ops);
snd_pcm_lib_preallocate_pages_for_all(cdev->pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
MAX_BUFFER_SIZE, MAX_BUFFER_SIZE);
cdev->data_cb_info =
kmalloc(sizeof(struct snd_usb_caiaq_cb_info) * N_URBS,
GFP_KERNEL);