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Code Issues Releases Wiki Activity

ALSA: 6fire: Use managed buffer allocation 

Clean up the driver with the new managed buffer allocation API.
The hw_params and hw_free callbacks became superfluous and got
dropped.

Link: https://lore.kernel.org/r/20191209094943.14984-65-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2019-12-09 10:49:36 +01:00
parent ce747f8642
commit a3c10ea47e
1 changed files with 1 additions and 16 deletions
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17
sound/usb/6fire/pcm.c
View File

@ -446,18 +446,6 @@ static int usb6fire_pcm_close(struct snd_pcm_substream *alsa_sub)
return 0;
}
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));
}
static int usb6fire_pcm_hw_free(struct snd_pcm_substream *alsa_sub)
{
return snd_pcm_lib_free_pages(alsa_sub);
}
static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub)
{
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
@ -555,8 +543,6 @@ static const struct snd_pcm_ops pcm_ops = {
.open = usb6fire_pcm_open,
.close = usb6fire_pcm_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = usb6fire_pcm_hw_params,
.hw_free = usb6fire_pcm_hw_free,
.prepare = usb6fire_pcm_prepare,
.trigger = usb6fire_pcm_trigger,
.pointer = usb6fire_pcm_pointer,
@ -658,8 +644,7 @@ int usb6fire_pcm_init(struct sfire_chip *chip)
strcpy(pcm->name, "DMX 6Fire USB");
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pcm_ops);
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_VMALLOC,
NULL, 0, 0);
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_VMALLOC, NULL, 0, 0);
rt->instance = pcm;