If the stream-id is zero, the keep-alive (KAE) will only ensure clock is
generated, but no audio samples are sent over display link. This happens
before first real audio stream is played out to a newly connected
receiver.

Reuse the code in silent_stream_enable() to set up stream parameters
to sane defaults values, also when using the newer keep-alive flow.

Fixes: 15175a4f2bbb ("ALSA: hda/hdmi: add keep-alive support for ADL-P and DG2")
Signed-off-by: Kai Vehmanen <kai.vehma...@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.boss...@linux.intel.com>
Tested-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
 sound/pci/hda/patch_hdmi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index a0ba24165ae2..1618419647aa 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1738,6 +1738,7 @@ static void silent_stream_enable(struct hda_codec *codec,
 
        switch (spec->silent_stream_type) {
        case SILENT_STREAM_KAE:
+               silent_stream_enable_i915(codec, per_pin);
                silent_stream_set_kae(codec, per_pin, true);
                break;
        case SILENT_STREAM_I915:
-- 
2.38.1

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