ASoC: SOF: Intel: hda-dai: protect hw_params against successive calls

Once we've set-up the HDA stream and its format, we currently don't
support additional format changes. We already have a protection in the
.prepare case, but this needs to be added in the hw_params too.

In mixing use cases where two DPCM FEs are connected to the same BE,
if can happen that there are multiple calls to the BE hw_params when
the two FEs are configured simultaneously.

This could alternatively be fixed at the DPCM level but that's a more
intrusive change requiring infrastructure changes: this would need to
be paired with the definition of fixed hw_params at the mixer level.

Signed-off-by: Pierre-Louis Bossart <[email protected]>
Reviewed-by: Rander Wang <[email protected]>
Reviewed-by: Ranjani Sridharan <[email protected]>
Reviewed-by: Péter Ujfalusi <[email protected]>
Reviewed-by: Bard Liao <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

0 files changed, 0 insertions, 0 deletions