[PATCH -next] ASoC: amd: remove set but not used variable 'dma_buffer'

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Fixes gcc '-Wunused-but-set-variable' warning:

sound/soc/amd/raven/acp3x-pcm-dma.c: In function 'acp3x_dma_hw_params':
sound/soc/amd/raven/acp3x-pcm-dma.c:333:25: warning:
 variable 'dma_buffer' set but not used [-Wunused-but-set-variable]

It never used since introduction in commit
8de1b5ed0337 ("ASoC: amd: add acp3x system resume pm op")

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 sound/soc/amd/raven/acp3x-pcm-dma.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 2e61cef..28a867f 100644
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -330,7 +330,6 @@ static int acp3x_dma_hw_params(struct snd_pcm_substream *substream,
 {
 	int status;
 	u64 size;
-	struct snd_dma_buffer *dma_buffer;
 	struct page *pg;
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct i2s_stream_instance *rtd = runtime->private_data;
@@ -338,7 +337,6 @@ static int acp3x_dma_hw_params(struct snd_pcm_substream *substream,
 	if (!rtd)
 		return -EINVAL;
 
-	dma_buffer = &substream->dma_buffer;
 	size = params_buffer_bytes(params);
 	status = snd_pcm_lib_malloc_pages(substream, size);
 	if (status < 0)






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