[PATCH 3/6] ASoC: AMD: Always subtract bytescount

[Daniel Kurtz]

It is always correct to subtract out the starting bytescount value.  Even
in the case of 2^64 byte rollover (292 Million Years in the future
@ 48000 Hz) the math still works out.

Signed-off-by: Daniel Kurtz <djku...@chromium.org>
---
 sound/soc/amd/acp-pcm-dma.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c
index e6f85f2e5ac2a..224383fef0c3a 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -995,8 +995,7 @@ static snd_pcm_uframes_t acp_dma_pointer(struct 
snd_pcm_substream *substream)
        buffersize = frames_to_bytes(runtime, runtime->buffer_size);
        bytescount = acp_get_byte_count(rtd);
 
-       if (bytescount > rtd->bytescount)
-               bytescount -= rtd->bytescount;
+       bytescount -= rtd->bytescount;
        pos = do_div(bytescount, buffersize);
        return bytes_to_frames(runtime, pos);
 }
-- 
2.18.0.399.gad0ab374a1-goog