The patch ASoC: SOF: pcm: skip DMA buffer pre-allocation has been applied to the asoc tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git 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 e582f4832a9ee27d92502b58f3a1b3331457e8bb Mon Sep 17 00:00:00 2001 From: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx> Date: Fri, 28 Feb 2020 17:18:47 -0600 Subject: [PATCH] ASoC: SOF: pcm: skip DMA buffer pre-allocation As discussion in ALSA https://patchwork.kernel.org/patch/11336023/, it is suggested to skip DMA buffer pre-allocation with passing size=0 when calling snd_pcm_set_managed_buffer(), to make the full buffer_bytes range configured in topology file selectable from user space, here do the corresponding change in SOF PCM driver to implement it. This change doesn't have dependency to the change that Takashi will do in the ALSA core by adding total_pcm_alloc_bytes limitation to the struct snd_card, it passes tests both with or without Takashi's coming change on SOF CML platform. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx> Signed-off-by: Keyon Jie <yang.jie@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200228231850.9226-2-pierre-louis.bossart@xxxxxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- sound/soc/sof/pcm.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/sound/soc/sof/pcm.c b/sound/soc/sof/pcm.c index b239bbff4b5c..f4769e19965a 100644 --- a/sound/soc/sof/pcm.c +++ b/sound/soc/sof/pcm.c @@ -601,8 +601,7 @@ static int sof_pcm_new(struct snd_soc_component *component, snd_pcm_set_managed_buffer(pcm->streams[stream].substream, SNDRV_DMA_TYPE_DEV_SG, sdev->dev, - le32_to_cpu(caps->buffer_size_min), - le32_to_cpu(caps->buffer_size_max)); + 0, le32_to_cpu(caps->buffer_size_max)); capture: stream = SNDRV_PCM_STREAM_CAPTURE; @@ -624,8 +623,7 @@ static int sof_pcm_new(struct snd_soc_component *component, snd_pcm_set_managed_buffer(pcm->streams[stream].substream, SNDRV_DMA_TYPE_DEV_SG, sdev->dev, - le32_to_cpu(caps->buffer_size_min), - le32_to_cpu(caps->buffer_size_max)); + 0, le32_to_cpu(caps->buffer_size_max)); return 0; } -- 2.20.1
