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The amplifier may provide hardware support for I/V feedback, or alternatively the firmware may generate an echo reference attached to the SSP and dailink used for the amplifier. To avoid any issues with invalid/NULL substreams in the latter case, always unconditionally set dpcm_capture. Link: https://github.com/thesofproject/linux/issues/4083 Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com> Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com> Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com> Link: https://lore.kernel.org/r/20230119163459.2235843-5-kai.vehmanen@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>