ALSA: dummy: Use managed buffer allocation

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

Link: https://lore.kernel.org/r/20191209094943.14984-6-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 022a0db692e0153eb1eb42d1528fba932cf7aac6..ab6062dcd1b3f57c0bdc7de74bed1f975a326812 100644 (file)
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -529,15 +529,7 @@ static int dummy_pcm_hw_params(struct snd_pcm_substream *substream,
                substream->runtime->dma_bytes = params_buffer_bytes(hw_params);
                return 0;
        }
-       return snd_pcm_lib_malloc_pages(substream,
-                                       params_buffer_bytes(hw_params));
-}
-
-static int dummy_pcm_hw_free(struct snd_pcm_substream *substream)
-{
-       if (fake_buffer)
-               return 0;
-       return snd_pcm_lib_free_pages(substream);
+       return 0;
 }
 
 static int dummy_pcm_open(struct snd_pcm_substream *substream)
@@ -657,7 +649,6 @@ static struct snd_pcm_ops dummy_pcm_ops = {
        .close =        dummy_pcm_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    dummy_pcm_hw_params,
-       .hw_free =      dummy_pcm_hw_free,
        .prepare =      dummy_pcm_prepare,
        .trigger =      dummy_pcm_trigger,
        .pointer =      dummy_pcm_pointer,
@@ -668,7 +659,6 @@ static struct snd_pcm_ops dummy_pcm_ops_no_buf = {
        .close =        dummy_pcm_close,
        .ioctl =        snd_pcm_lib_ioctl,
        .hw_params =    dummy_pcm_hw_params,
-       .hw_free =      dummy_pcm_hw_free,
        .prepare =      dummy_pcm_prepare,
        .trigger =      dummy_pcm_trigger,
        .pointer =      dummy_pcm_pointer,
@@ -700,7 +690,7 @@ static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
        pcm->info_flags = 0;
        strcpy(pcm->name, "Dummy PCM");
        if (!fake_buffer) {
-               snd_pcm_lib_preallocate_pages_for_all(pcm,
+               snd_pcm_set_managed_buffer_all(pcm,
                        SNDRV_DMA_TYPE_CONTINUOUS,
                        NULL,
                        0, 64*1024);