ASoC: Intel: avs: Initialize private data for subsequent HDA FEs

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HDAudio implementation found in sound/pci/hda expects a valid stream
pointer in substream->runtime->private_data location. For ASoC users,
that should point to a valid link stream which is assigned when BE
opens.

As BE borrows its runtime from FE, the information may be lost when
reparenting comes into picture - see dpcm_be_reparent(). To support the
DPCM reparenting functionality for HDAudio scenarios while still
fulfilling expectations of HDAudio common code, have all FEs point to
the same private data.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221118113052.1340593-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Cezary Rojewski 2022-11-18 12:30:52 +01:00 • committed by Mark Brown

parent b1af5b34d6

commit f38d4c72cb

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sound/soc/intel/avs/pcm.c

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