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[5.15,371/913] ASoC: amd: Fix reference to PCM buffer address

Message ID 20220405070350.967960528@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman April 5, 2022, 7:23 a.m. UTC 
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(-)
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Patch

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;