[alsa-devel] Applied "ASoC: dwc: Use managed buffer allocation" to the asoc tree

[Mark Brown]

The patch

   ASoC: dwc: Use managed buffer allocation

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.6

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From fcf306efab32975e4f8bdf5e9d3e7c34fe4ce48c Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai at suse.de>
Date: Tue, 10 Dec 2019 15:25:54 +0100
Subject: [PATCH] ASoC: dwc: Use managed buffer allocation

Clean up the drivers with the new managed buffer allocation API.
The superfluous snd_pcm_lib_malloc_pages() and
snd_pcm_lib_free_pages() calls are dropped, as well as the superfluous
snd_pcm_lib_preallocate_free_for_all() call.  As of the result,
hw_free and pcm_destruct ops became empty and got removed.

Signed-off-by: Takashi Iwai <tiwai at suse.de>
Link: https://lore.kernel.org/r/20191210142614.19405-4-tiwai@suse.de
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/dwc/dwc-pcm.c | 24 ++----------------------
 1 file changed, 2 insertions(+), 22 deletions(-)

diff --git a/sound/soc/dwc/dwc-pcm.c b/sound/soc/dwc/dwc-pcm.c
index bf36c1d29642..4b25aca3804f 100644
--- a/sound/soc/dwc/dwc-pcm.c
+++ b/sound/soc/dwc/dwc-pcm.c
@@ -162,7 +162,6 @@ static int dw_pcm_hw_params(struct snd_soc_component *component,
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct dw_i2s_dev *dev = runtime->private_data;
-	int ret;
 
 	switch (params_channels(hw_params)) {
 	case 2:
@@ -187,18 +186,7 @@ static int dw_pcm_hw_params(struct snd_soc_component *component,
 		return -EINVAL;
 	}
 
-	ret = snd_pcm_lib_malloc_pages(substream,
-			params_buffer_bytes(hw_params));
-	if (ret < 0)
-		return ret;
-	else
-		return 0;
-}
-
-static int dw_pcm_hw_free(struct snd_soc_component *component,
-			  struct snd_pcm_substream *substream)
-{
-	return snd_pcm_lib_free_pages(substream);
+	return 0;
 }
 
 static int dw_pcm_trigger(struct snd_soc_component *component,
@@ -256,27 +244,19 @@ static int dw_pcm_new(struct snd_soc_component *component,
 {
 	size_t size = dw_pcm_hardware.buffer_bytes_max;
 
-	snd_pcm_lib_preallocate_pages_for_all(rtd->pcm,
+	snd_pcm_set_managed_buffer_all(rtd->pcm,
 			SNDRV_DMA_TYPE_CONTINUOUS,
 			NULL, size, size);
 	return 0;
 }
 
-static void dw_pcm_free(struct snd_soc_component *component,
-			struct snd_pcm *pcm)
-{
-	snd_pcm_lib_preallocate_free_for_all(pcm);
-}
-
 static const struct snd_soc_component_driver dw_pcm_component = {
 	.open		= dw_pcm_open,
 	.close		= dw_pcm_close,
 	.hw_params	= dw_pcm_hw_params,
-	.hw_free	= dw_pcm_hw_free,
 	.trigger	= dw_pcm_trigger,
 	.pointer	= dw_pcm_pointer,
 	.pcm_construct	= dw_pcm_new,
-	.pcm_destruct	= dw_pcm_free,
 };
 
 int dw_pcm_register(struct platform_device *pdev)
-- 
2.20.1