Commit 4a9f9118 authored by Antonio Ospite's avatar Antonio Ospite Committed by Takashi Iwai
Browse files

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



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

Signed-off-by: default avatarAntonio Ospite <ao2@amarulasolutions.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent fc76f863

sound/usb/6fire/pcm.c

+5 −7
Original line number Diff line number Diff line
@@ -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,

	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