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ALSA: caiaq: Use managed buffer allocation

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Clean up the driver with the new managed buffer allocation API.
The hw_params callback became superfluous and dropped.
The hw_free callback still remains because of the substream
deactivation sync call.

Link: https://lore.kernel.org/r/20191209094943.14984-66-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2019-12-09 10:49:37 +01:00
parent a3c10ea47e
commit 1075b321ab
1 changed files with 3 additions and 10 deletions
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13
sound/usb/caiaq/audio.c
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@ -167,17 +167,11 @@ static int snd_usb_caiaq_substream_close(struct snd_pcm_substream *substream)
return 0;
}
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));
}
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 0;
}
/* this should probably go upstream */
@ -328,7 +322,6 @@ static const struct snd_pcm_ops snd_usb_caiaq_ops = {
.open = snd_usb_caiaq_substream_open,
.close = snd_usb_caiaq_substream_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_usb_caiaq_pcm_hw_params,
.hw_free = snd_usb_caiaq_pcm_hw_free,
.prepare = snd_usb_caiaq_pcm_prepare,
.trigger = snd_usb_caiaq_pcm_trigger,
@ -841,8 +834,8 @@ int snd_usb_caiaq_audio_init(struct snd_usb_caiaqdev *cdev)
&snd_usb_caiaq_ops);
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_VMALLOC,
NULL, 0, 0);
snd_pcm_set_managed_buffer_all(cdev->pcm, SNDRV_DMA_TYPE_VMALLOC,
NULL, 0, 0);
cdev->data_cb_info =
kmalloc_array(N_URBS, sizeof(struct snd_usb_caiaq_cb_info),