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Peter/sof/pr/fw loader min two dble 01 #5180

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Peter/sof/pr/fw loader min two dble 01 #5180

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8 changes: 7 additions & 1 deletion sound/soc/sof/intel/hda-stream.c
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Original file line number Diff line number Diff line change
Expand Up @@ -120,8 +120,14 @@ int hda_dsp_stream_setup_bdl(struct snd_sof_dev *sdev,

period_bytes = hstream->period_bytes;
dev_dbg(sdev->dev, "period_bytes:0x%x\n", period_bytes);
/*
* HDA spec demands at least two 'periods' for the DMA to work correctly
* Note: period_bytes == 0 can only happen for firmware or library
* loading, the binary sizes have the necessary alignment requirements
* met
*/
if (!period_bytes)
period_bytes = hstream->bufsize;
period_bytes = hstream->bufsize / 2;

periods = hstream->bufsize / period_bytes;

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