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ASoC: amd: Fix reference to PCM buffer address

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PCM buffers might be allocated dynamically when the buffer
preallocation failed or a larger buffer is requested, and it's not
guaranteed that substream->dma_buffer points to the actually used
buffer.  The driver needs to refer to substream->runtime->dma_addr
instead for the buffer address.

Fixes: cab396d8b2 ("ASoC: amd: add ACP5x pcm dma driver ops")
Signed-off-by: Meng Tang <tangmeng@uniontech.com>
Link: https://lore.kernel.org/r/20220316091303.9745-1-tangmeng@uniontech.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Meng Tang 2022-03-16 17:13:03 +08:00 committed by Mark Brown
parent 9531a63137
commit 54e1bf9f61
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1 changed files with 1 additions and 1 deletions
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2
sound/soc/amd/vangogh/acp5x-pcm-dma.c
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@ -281,7 +281,7 @@ static int acp5x_dma_hw_params(struct snd_soc_component *component,
return -EINVAL;
}
size = params_buffer_bytes(params);
rtd->dma_addr = substream->dma_buffer.addr;
rtd->dma_addr = substream->runtime->dma_addr;
rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);
config_acp5x_dma(rtd, substream->stream);
return 0;