From 715cdce04487fb23d5c10693b3bc01309fea955a Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Mon, 2 Jul 2018 15:19:52 -0600 Subject: [PATCH] ASoC: AMD: Always subtract bytescount 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 Signed-off-by: Mark Brown --- 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 4665ae12e74e..034fac3de037 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); }