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    Subject[PATCH 5.17 0419/1126] ASoC: amd: Fix reference to PCM buffer address
    Date
    From: Meng Tang <tangmeng@uniontech.com>

    [ Upstream commit 54e1bf9f6177a3ffbd920474f4481a25361163aa ]

    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: cab396d8b22c1 ("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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    sound/soc/amd/vangogh/acp5x-pcm-dma.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/sound/soc/amd/vangogh/acp5x-pcm-dma.c b/sound/soc/amd/vangogh/acp5x-pcm-dma.c
    index f10de38976cb..6abcc2133a2c 100644
    --- a/sound/soc/amd/vangogh/acp5x-pcm-dma.c
    +++ b/sound/soc/amd/vangogh/acp5x-pcm-dma.c
    @@ -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;
    --
    2.34.1


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