Applied "ASoC: amd: use do_div rather than 64 bit division to fix 32 bit builds" to the asoc tree

Mark Brown broonie at
Wed Nov 8 21:43:35 UTC 2017

The patch

   ASoC: amd: use do_div rather than 64 bit division to fix 32 bit builds

has been applied to the asoc tree at 

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>From 7db08b2cb36cbfbcb06c44dc8e48ccb6a119466f Mon Sep 17 00:00:00 2001
From: Guenter Roeck <groeck at>
Date: Wed, 8 Nov 2017 16:34:54 -0500
Subject: [PATCH] ASoC: amd: use do_div rather than 64 bit division to fix 32
 bit builds

ERROR: "__aeabi_uldivmod" [sound/soc/amd/snd-soc-acp-pcm.ko] undefined!

64-bit divides require special operations to avoid build errors on 32-bit

[Reword the commit message to make it clearer - Alex]

fixes: 61add8147942 (ASoC: amd: Report accurate hw_ptr during dma)
Signed-off-by: Guenter Roeck <groeck at>
Reviewed-by: Jason Clinton <jclinton at>
Signed-off-by: Alex Deucher <alexander.deucher at>
Signed-off-by: Mark Brown <broonie at>
 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 13d040a4d26f..ef7e98ad960c 100644
--- a/sound/soc/amd/acp-pcm-dma.c
+++ b/sound/soc/amd/acp-pcm-dma.c
@@ -856,12 +856,11 @@ static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream)
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		if (bytescount > rtd->renderbytescount)
 			bytescount = bytescount - rtd->renderbytescount;
-		pos =  bytescount % buffersize;
 	} else {
 		if (bytescount > rtd->capturebytescount)
 			bytescount = bytescount - rtd->capturebytescount;
-		pos = bytescount % buffersize;
+	pos = do_div(bytescount, buffersize);
 	return bytes_to_frames(runtime, pos);

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