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ASoC: SOF: Don't allow pointer operations on unconfigured streams

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When reporting the pointer for a compressed stream we report the current
I/O frame position by dividing the position by the number of channels
multiplied by the number of container bytes. These values default to 0 and
are only configured as part of setting the stream parameters so this allows
a divide by zero to be configured. Validate that they are non zero,
returning an error if not

Fixes: c1a731c713 ("ASoC: SOF: compress: Add support for computing timestamps")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260326-asoc-compress-tstamp-params-v1-1-3dc735b3d599@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mark Brown
2026-03-26 14:52:41 +00:00
parent 2603ea46ce
commit c5b6285aae
1 changed files with 3 additions and 0 deletions
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3
sound/soc/sof/compress.c
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@@ -381,6 +381,9 @@ static int sof_compr_pointer(struct snd_soc_component *component,
if (!spcm)
return -EINVAL;
if (!sstream->channels || !sstream->sample_container_bytes)
return -EBUSY;
tstamp->sampling_rate = sstream->sampling_rate;
tstamp->copied_total = sstream->copied_total;
tstamp->pcm_io_frames = div_u64(spcm->stream[cstream->direction].posn.dai_posn,